diff --git a/Common/Common-Unity/Common-Unity.csproj b/Common/Common-Unity/Common-Unity.csproj
index 4bb9263..9ab3475 100644
--- a/Common/Common-Unity/Common-Unity.csproj
+++ b/Common/Common-Unity/Common-Unity.csproj
@@ -30,6 +30,9 @@
     <Compile Include="..\Common\Json\LCJsonConverter.cs">
       <Link>Json\LCJsonConverter.cs</Link>
     </Compile>
+    <Compile Include="..\Common\Exception\LCException.cs">
+      <Link>Exception\LCException.cs</Link>
+    </Compile>
   </ItemGroup>
   <ItemGroup>
     <Reference Include="Newtonsoft.Json">
diff --git a/Common/Common/Common.csproj b/Common/Common/Common.csproj
index 8157b01..669c947 100644
--- a/Common/Common/Common.csproj
+++ b/Common/Common/Common.csproj
@@ -13,5 +13,6 @@
     <Folder Include="Log\" />
     <Folder Include="Http\" />
     <Folder Include="Task\" />
+    <Folder Include="Exception\" />
   </ItemGroup>
 </Project>
diff --git a/Storage/Storage/LCException.cs b/Common/Common/Exception/LCException.cs
similarity index 50%
rename from Storage/Storage/LCException.cs
rename to Common/Common/Exception/LCException.cs
index acf2249..1daebab 100644
--- a/Storage/Storage/LCException.cs
+++ b/Common/Common/Exception/LCException.cs
@@ -1,11 +1,20 @@
 using System;
 
-namespace LeanCloud.Storage {
+namespace LeanCloud {
+    /// <summary>
+    /// LeanCloud 异常
+    /// </summary>
     public class LCException : Exception {
+        /// <summary>
+        /// 错误码
+        /// </summary>
         public int Code {
             get; set;
         }
 
+        /// <summary>
+        /// 错误信息
+        /// </summary>
         public new string Message {
             get; set;
         }
@@ -14,5 +23,9 @@ namespace LeanCloud.Storage {
             Code = code;
             Message = message;
         }
+
+        public override string ToString() {
+            return $"{Code} - {Message}";
+        }
     }
 }
diff --git a/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs b/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs
index 1f23ead..68798b0 100644
--- a/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs
+++ b/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs
@@ -52,7 +52,7 @@ namespace LeanCloud.Realtime.Internal.Controller {
                 attrs["name"] = name;
             }
             if (properties != null) {
-                attrs = properties.Union(attrs)
+                attrs = properties.Union(attrs.Where(kv => !properties.ContainsKey(kv.Key)))
                     .ToDictionary(k => k.Key, v => v.Value);
             }
             conv.Attr = new JsonObjectMessage {
diff --git a/Storage/Storage-Unity/Storage-Unity.csproj b/Storage/Storage-Unity/Storage-Unity.csproj
index 7ea411a..42d8e68 100644
--- a/Storage/Storage-Unity/Storage-Unity.csproj
+++ b/Storage/Storage-Unity/Storage-Unity.csproj
@@ -15,9 +15,6 @@
     <Compile Include="..\Storage\LCCloud.cs">
       <Link>LCCloud.cs</Link>
     </Compile>
-    <Compile Include="..\Storage\LCException.cs">
-      <Link>LCException.cs</Link>
-    </Compile>
     <Compile Include="..\Storage\LCFile.cs">
       <Link>LCFile.cs</Link>
     </Compile>
diff --git a/Storage/Storage.Test/ACLTest.cs b/Storage/Storage.Test/ACLTest.cs
index 967da0c..733cd02 100644
--- a/Storage/Storage.Test/ACLTest.cs
+++ b/Storage/Storage.Test/ACLTest.cs
@@ -1,5 +1,6 @@
 using NUnit.Framework;
 using System.Threading.Tasks;
+using System.Collections.ObjectModel;
 using LeanCloud;
 using LeanCloud.Storage;
 
@@ -74,5 +75,19 @@ namespace Storage.Test {
             TestContext.WriteLine(account.ObjectId);
             Assert.NotNull(account.ObjectId);
         }
+
+        [Test]
+        public async Task Serialization() {
+            await LCUser.Login("hello", "world");
+            LCQuery<LCObject> query = new LCQuery<LCObject>("Account") {
+                IncludeACL = true
+            };
+            query.OrderByDescending("createdAt");
+            ReadOnlyCollection<LCObject> accounts = await query.Find();
+            foreach (LCObject account in accounts) {
+                TestContext.WriteLine($"public read access: {account.ACL.PublicReadAccess}");
+                TestContext.WriteLine($"public write access: {account.ACL.PublicWriteAccess}");
+            }
+        }
     }
 }
diff --git a/Storage/Storage.Test/ExceptionTest.cs b/Storage/Storage.Test/ExceptionTest.cs
index 83f70b3..bcd80c0 100644
--- a/Storage/Storage.Test/ExceptionTest.cs
+++ b/Storage/Storage.Test/ExceptionTest.cs
@@ -1,5 +1,5 @@
 using NUnit.Framework;
-using LeanCloud.Storage;
+using LeanCloud;
 
 namespace Storage.Test {
     public class ExceptionTest {
diff --git a/Storage/Storage/Internal/Codec/LCDecoder.cs b/Storage/Storage/Internal/Codec/LCDecoder.cs
index f9dd00a..b4b9770 100644
--- a/Storage/Storage/Internal/Codec/LCDecoder.cs
+++ b/Storage/Storage/Internal/Codec/LCDecoder.cs
@@ -68,10 +68,25 @@ namespace LeanCloud.Storage.Internal.Codec {
         }
 
         public static LCGeoPoint DecodeGeoPoint(IDictionary data) {
-            double latitude = double.Parse(data["latitude"].ToString());
-            double longitude = double.Parse(data["longitude"].ToString());
+            double latitude = Convert.ToDouble(data["latitude"]);
+            double longitude = Convert.ToDouble(data["longitude"]);
             LCGeoPoint geoPoint = new LCGeoPoint(latitude, longitude);
             return geoPoint;
         }
+
+        public static LCACL DecodeACL(Dictionary<string, object> dict) {
+            LCACL acl = new LCACL();
+            foreach (KeyValuePair<string, object> kv in dict) {
+                string key = kv.Key;
+                Dictionary<string, object> access = kv.Value as Dictionary<string, object>;
+                if (access.TryGetValue("read", out object ra)) {
+                    acl.readAccess[key] = Convert.ToBoolean(ra);
+                }
+                if (access.TryGetValue("write", out object wa)) {
+                    acl.writeAccess[key] = Convert.ToBoolean(wa);
+                }
+            }
+            return acl;
+        }
     }
 }
diff --git a/Storage/Storage/Internal/Codec/LCEncoder.cs b/Storage/Storage/Internal/Codec/LCEncoder.cs
index 383247b..a216200 100644
--- a/Storage/Storage/Internal/Codec/LCEncoder.cs
+++ b/Storage/Storage/Internal/Codec/LCEncoder.cs
@@ -83,18 +83,25 @@ namespace LeanCloud.Storage.Internal.Codec {
         }
 
         public static object EncodeACL(LCACL acl) {
-            HashSet<string> readers = acl.readers;
-            HashSet<string> writers = acl.writers;
-            HashSet<string> union = new HashSet<string>(readers);
-            union.UnionWith(writers);
-            Dictionary<string, object> dict = new Dictionary<string, object>();
-            foreach (string k in union) {
-                dict[k] = new Dictionary<string, object> {
-                    { "read", readers.Contains(k) },
-                    { "write", writers.Contains(k) }
-                };
+            HashSet<string> keys = new HashSet<string>();
+            if (acl.readAccess.Count > 0) {
+                keys.UnionWith(acl.readAccess.Keys);
             }
-            return dict;
+            if (acl.writeAccess.Count > 0) {
+                keys.UnionWith(acl.writeAccess.Keys);
+            }
+            Dictionary<string, object> result = new Dictionary<string, object>();
+            foreach (string key in keys) {
+                Dictionary<string, bool> access = new Dictionary<string, bool>();
+                if (acl.readAccess.TryGetValue(key, out bool ra)) {
+                    access["read"] = ra;
+                }
+                if (acl.writeAccess.TryGetValue(key, out bool wa)) {
+                    access["write"] = wa;
+                }
+                result[key] = access;
+            }
+            return result;
         }
 
         public static object EncodeRelation(LCRelation<LCObject> relation) {
diff --git a/Storage/Storage/Internal/Object/LCObjectData.cs b/Storage/Storage/Internal/Object/LCObjectData.cs
index 152c445..bc5e90d 100644
--- a/Storage/Storage/Internal/Object/LCObjectData.cs
+++ b/Storage/Storage/Internal/Object/LCObjectData.cs
@@ -40,11 +40,16 @@ namespace LeanCloud.Storage.Internal.Object {
                 } else if (key == "objectId") {
                     objectData.ObjectId = value.ToString();
                 } else if (key == "createdAt" && DateTime.TryParse(value.ToString(), out DateTime createdAt)) {
-                    objectData.CreatedAt = createdAt;
+                    objectData.CreatedAt = createdAt.ToLocalTime();
                 } else if (key == "updatedAt" && DateTime.TryParse(value.ToString(), out DateTime updatedAt)) {
-                    objectData.UpdatedAt = updatedAt;
+                    objectData.UpdatedAt = updatedAt.ToLocalTime();
                 } else {
-                    objectData.CustomPropertyDict[key] = LCDecoder.Decode(value);
+                    if (key == "ACL" &&
+                        value is Dictionary<string, object> dic) {
+                        objectData.CustomPropertyDict[key] = LCDecoder.DecodeACL(dic);
+                    } else {
+                        objectData.CustomPropertyDict[key] = LCDecoder.Decode(value);
+                    }
                 }
             }
             return objectData;
@@ -61,10 +66,10 @@ namespace LeanCloud.Storage.Internal.Object {
                 dict["objectId"] = objectData.ObjectId;
             }
             if (objectData.CreatedAt != null) {
-                dict["createdAt"] = objectData.CreatedAt;
+                dict["createdAt"] = objectData.CreatedAt.ToUniversalTime();
             }
             if (objectData.UpdatedAt != null) {
-                dict["updatedAt"] = objectData.UpdatedAt;
+                dict["updatedAt"] = objectData.UpdatedAt.ToUniversalTime();
             }
             if (objectData.CustomPropertyDict != null) {
                 foreach (KeyValuePair<string, object> kv in objectData.CustomPropertyDict) {
diff --git a/Storage/Storage/Internal/Query/LCCompositionalCondition.cs b/Storage/Storage/Internal/Query/LCCompositionalCondition.cs
index 426a904..7217927 100644
--- a/Storage/Storage/Internal/Query/LCCompositionalCondition.cs
+++ b/Storage/Storage/Internal/Query/LCCompositionalCondition.cs
@@ -24,6 +24,10 @@ namespace LeanCloud.Storage.Internal.Query {
             get; set;
         }
 
+        public bool IncludeACL {
+            get; set;
+        }
+
         public LCCompositionalCondition(string composition = And) {
             this.composition = composition;
             Skip = 0;
@@ -217,6 +221,9 @@ namespace LeanCloud.Storage.Internal.Query {
             if (selectedKeys != null && selectedKeys.Count > 0) {
                 dict["keys"] = string.Join(",", selectedKeys);
             }
+            if (IncludeACL) {
+                dict["returnACL"] = "true";
+            }
             return dict;
         }
 
diff --git a/Storage/Storage/LCACL.cs b/Storage/Storage/LCACL.cs
index b7b6664..024c48f 100644
--- a/Storage/Storage/LCACL.cs
+++ b/Storage/Storage/LCACL.cs
@@ -10,22 +10,32 @@ namespace LeanCloud.Storage {
 
         const string RoleKeyPrefix = "role:";
 
-        internal HashSet<string> readers;
-        internal HashSet<string> writers;
+        internal Dictionary<string, bool> readAccess = new Dictionary<string, bool>();
+        internal Dictionary<string, bool> writeAccess = new Dictionary<string, bool>();
+
+        public static LCACL CreateWithOwner(LCUser owner) {
+            if (owner == null) {
+                throw new ArgumentNullException(nameof(owner));
+            }
+            LCACL acl = new LCACL();
+            acl.SetUserReadAccess(owner, true);
+            acl.SetUserWriteAccess(owner, true);
+            return acl;
+        }
 
         public bool PublicReadAccess {
             get {
-                return GetAccess(readers, PublicKey);
+                return GetAccess(readAccess, PublicKey);
             } set {
-                SetAccess(readers, PublicKey, value);
+                SetAccess(readAccess, PublicKey, value);
             }
         }
 
         public bool PublicWriteAccess {
             get {
-                return GetAccess(writers, PublicKey);
+                return GetAccess(writeAccess, PublicKey);
             } set {
-                SetAccess(writers, PublicKey, value);
+                SetAccess(writeAccess, PublicKey, value);
             }
         }
 
@@ -33,28 +43,28 @@ namespace LeanCloud.Storage {
             if (string.IsNullOrEmpty(userId)) {
                 throw new ArgumentNullException(nameof(userId));
             }
-            return GetAccess(readers, userId);
+            return GetAccess(readAccess, userId);
         }
 
         public void SetUserIdReadAccess(string userId, bool value) {
             if (string.IsNullOrEmpty(userId)) {
                 throw new ArgumentNullException(nameof(userId));
             }
-            SetAccess(readers, userId, value);
+            SetAccess(readAccess, userId, value);
         }
 
         public bool GetUserIdWriteAccess(string userId) {
             if (string.IsNullOrEmpty(userId)) {
                 throw new ArgumentNullException(nameof(userId));
             }
-            return GetAccess(writers, userId);
+            return GetAccess(writeAccess, userId);
         }
 
         public void SetUserIdWriteAccess(string userId, bool value) {
             if (string.IsNullOrEmpty(userId)) {
                 throw new ArgumentNullException(nameof(userId));
             }
-            SetAccess(writers, userId, value);
+            SetAccess(writeAccess, userId, value);
         }
 
         public bool GetUserReadAccess(LCUser user) {
@@ -90,7 +100,7 @@ namespace LeanCloud.Storage {
                 throw new ArgumentNullException(nameof(role));
             }
             string roleKey = $"{RoleKeyPrefix}{role.ObjectId}";
-            return GetAccess(readers, roleKey);
+            return GetAccess(readAccess, roleKey);
         }
 
         public void SetRoleReadAccess(LCRole role, bool value) {
@@ -98,7 +108,7 @@ namespace LeanCloud.Storage {
                 throw new ArgumentNullException(nameof(role));
             }
             string roleKey = $"{RoleKeyPrefix}{role.ObjectId}";
-            SetAccess(readers, roleKey, value);
+            SetAccess(readAccess, roleKey, value);
         }
 
         public bool GetRoleWriteAccess(LCRole role) {
@@ -106,7 +116,7 @@ namespace LeanCloud.Storage {
                 throw new ArgumentNullException(nameof(role));
             }
             string roleKey = $"{RoleKeyPrefix}{role.ObjectId}";
-            return GetAccess(writers, roleKey);
+            return GetAccess(writeAccess, roleKey);
         }
 
         public void SetRoleWriteAccess(LCRole role, bool value) {
@@ -114,34 +124,16 @@ namespace LeanCloud.Storage {
                 throw new ArgumentNullException(nameof(role));
             }
             string roleKey = $"{RoleKeyPrefix}{role.ObjectId}";
-            SetAccess(writers, roleKey, value);
+            SetAccess(writeAccess, roleKey, value);
         }
 
-        public LCACL() {
-            readers = new HashSet<string>();
-            writers = new HashSet<string>();
+        bool GetAccess(Dictionary<string, bool> access, string key) {
+            return access.ContainsKey(key) ?
+                access[key] : false;
         }
 
-        public static LCACL CreateWithOwner(LCUser owner) {
-            if (owner == null) {
-                throw new ArgumentNullException(nameof(owner));
-            }
-            LCACL acl = new LCACL();
-            acl.SetUserReadAccess(owner, true);
-            acl.SetUserWriteAccess(owner, true);
-            return acl;
-        }
-
-        bool GetAccess(HashSet<string> set, string key) {
-            return set.Contains(key);
-        }
-
-        void SetAccess(HashSet<string> set, string key, bool value) {
-            if (value) {
-                set.Add(key);
-            } else {
-                set.Remove(key);
-            }
+        void SetAccess(Dictionary<string, bool> access, string key, bool value) {
+            access[key] = value;
         }
     }
 }
diff --git a/Storage/Storage/LCCloud.cs b/Storage/Storage/LCCloud.cs
index 830c8e0..01066c7 100644
--- a/Storage/Storage/LCCloud.cs
+++ b/Storage/Storage/LCCloud.cs
@@ -8,20 +8,31 @@ namespace LeanCloud.Storage {
     /// </summary>
     public static class LCCloud {
         /// <summary>
-        /// 调用云函数，结果为 Dictionary 类型
+        /// 调用云函数
         /// </summary>
         /// <param name="name"></param>
         /// <param name="parameters"></param>
-        /// <returns></returns>
-        public static async Task<Dictionary<string, object>> Run(string name, Dictionary<string, object> parameters = null) {
+        /// <returns>返回类型为 Dictionary<string, object></returns>
+        public static async Task<Dictionary<string, object>> Run(string name,
+            Dictionary<string, object> parameters = null) {
             string path = $"functions/{name}";
-            Dictionary<string, object> response = await LCApplication.HttpClient.Post<Dictionary<string, object>>(path, data: parameters);
+            object encodeParams = LCEncoder.Encode(parameters);
+            Dictionary<string, object> response = await LCApplication.HttpClient.Post<Dictionary<string, object>>(path,
+                data: encodeParams);
             return response;
         }
 
-        public static async Task<object> RPC(string name, Dictionary<string, object> parameters = null) {
+        /// <summary>
+        /// 调用 RPC 云函数
+        /// </summary>
+        /// <param name="name"></param>
+        /// <param name="parameters"></param>
+        /// <returns>返回类型为 LCObject 容器类型</returns>
+        public static async Task<object> RPC(string name, object parameters = null) {
             string path = $"call/{name}";
-            Dictionary<string, object> response = await LCApplication.HttpClient.Post<Dictionary<string, object>>(path, data: parameters);
+            object encodeParams = LCEncoder.Encode(parameters);
+            Dictionary<string, object> response = await LCApplication.HttpClient.Post<Dictionary<string, object>>(path,
+                data: encodeParams);
             return LCDecoder.Decode(response["result"]);
         }
     }
diff --git a/Storage/Storage/LCObject.cs b/Storage/Storage/LCObject.cs
index aacc54f..4b832d2 100644
--- a/Storage/Storage/LCObject.cs
+++ b/Storage/Storage/LCObject.cs
@@ -462,7 +462,10 @@ namespace LeanCloud.Storage {
         /// </summary>
         /// <returns></returns>
         public override string ToString() {
-            return JsonConvert.SerializeObject(LCObjectData.Encode(data));
+            Dictionary<string, object> originalData = LCObjectData.Encode(data);
+            Dictionary<string, object> currentData = estimatedData.Union(originalData.Where(kv => !estimatedData.ContainsKey(kv.Key)))
+                .ToDictionary(k => k.Key, v => v.Value);
+            return JsonConvert.SerializeObject(currentData);
         }
 
         /// <summary>
diff --git a/Storage/Storage/LCQuery.cs b/Storage/Storage/LCQuery.cs
index 7d391d9..586a91d 100644
--- a/Storage/Storage/LCQuery.cs
+++ b/Storage/Storage/LCQuery.cs
@@ -333,6 +333,17 @@ namespace LeanCloud.Storage {
             return this;
         }
 
+        /// <summary>
+        /// 是否包含 ACL
+        /// </summary>
+        public bool IncludeACL {
+            get {
+                return Condition.IncludeACL;
+            } set {
+                Condition.IncludeACL = value;
+            }
+        }
+
         /// <summary>
         /// 跳过
         /// </summary>
diff --git a/Storage/Storage/LCUser.cs b/Storage/Storage/LCUser.cs
index 7a9cc6c..b86001b 100644
--- a/Storage/Storage/LCUser.cs
+++ b/Storage/Storage/LCUser.cs
@@ -49,13 +49,13 @@ namespace LeanCloud.Storage {
 
         public bool EmailVerified {
             get {
-                return (bool)this["emailVerified"];
+                return Convert.ToBoolean(this["emailVerified"]);
             }
         }
 
         public bool MobileVerified {
             get {
-                return (bool)this["mobilePhoneVerified"];
+                return Convert.ToBoolean(this["mobilePhoneVerified"]);
             }
         }