Refactor.

framework/src/Volo.Abp.Json/Volo/Abp/Json/JsonConverters/AbpDateTimeConverter.cs

@@ -27,11 +27,11 @@ namespace Volo.Abp.Json.JsonConverters
         {
             if (_options.DefaultDateTimeFormat.IsNullOrWhiteSpace())
             {
-                writer.WriteStringValue(_clock.Normalize(value));
+                writer.WriteStringValue(value);
             }
             else
             {
-                writer.WriteStringValue(_clock.Normalize(value).ToString(_options.DefaultDateTimeFormat));
+                writer.WriteStringValue(value.ToString(_options.DefaultDateTimeFormat));
             }
         }
     }

framework/src/Volo.Abp.Json/Volo/Abp/Json/JsonConverters/AbpNullableDateTimeConverter.cs

@@ -38,11 +38,11 @@ namespace Volo.Abp.Json.JsonConverters
             {
                 if (_options.DefaultDateTimeFormat.IsNullOrWhiteSpace())
                 {
-                    writer.WriteStringValue(_clock.Normalize(value.Value));
+                    writer.WriteStringValue(value.Value);
                 }
                 else
                 {
-                    writer.WriteStringValue(_clock.Normalize(value.Value).ToString(_options.DefaultDateTimeFormat));
+                    writer.WriteStringValue(value.Value.ToString(_options.DefaultDateTimeFormat));
                 }
             }
         }

framework/src/Volo.Abp.Json/Volo/Abp/Json/JsonConverters/ObjectToInferredTypesConverter.cs

@@ -4,6 +4,9 @@ using System.Text.Json.Serialization;
 
 namespace Volo.Abp.Json.JsonConverters
 {
+    /// <summary>
+    /// https://docs.microsoft.com/en-us/dotnet/standard/serialization/system-text-json-converters-how-to#deserialize-inferred-types-to-object-properties
+    /// </summary>
     public class ObjectToInferredTypesConverter : JsonConverter<object>
     {
         public override object Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)

framework/test/Volo.Abp.MemoryDb.Tests/Volo/Abp/MemoryDb/JsonConverters/EntityJsonConverter.cs

@@ -24,7 +24,10 @@ namespace Volo.Abp.MemoryDb.JsonConverters
 
         public override void Write(Utf8JsonWriter writer, TEntity value, JsonSerializerOptions options)
         {
-            JsonSerializer.Serialize(writer, value);
+            var newOptions = new JsonSerializerOptions(options);
+            newOptions.Converters.Remove(this);
+            var entityConverter = (JsonConverter<TEntity>)newOptions.GetConverter(typeof(TEntity));
+            entityConverter.Write(writer, value, newOptions);
         }
     }
 }