diff --git a/Extensions/FreeSql.Extensions.BaseEntity/BaseEntity.cs b/Extensions/FreeSql.Extensions.BaseEntity/BaseEntity.cs
index 76d2d2a5..8986e5b5 100644
--- a/Extensions/FreeSql.Extensions.BaseEntity/BaseEntity.cs
+++ b/Extensions/FreeSql.Extensions.BaseEntity/BaseEntity.cs
@@ -13,8 +13,12 @@ using System.Threading.Tasks;
 namespace FreeSql
 {
     /// <summary>
+    /// Entity base class, including CreateTime/UpdateTime/IsDeleted, the CRUD methods, and ID primary key definition.
+    /// <para></para>
     /// 包括 CreateTime/UpdateTime/IsDeleted、CRUD 方法、以及 ID 主键定义 的实体基类
     /// <para></para>
+    /// When TKey is int/long, the Id is set to be an auto-incremented primary key
+    /// <para></para>
     /// 当 TKey 为 int/long 时，Id 主键被设为自增值主键
     /// </summary>
     /// <typeparam name="TEntity"></typeparam>
@@ -30,6 +34,7 @@ namespace FreeSql
         }
 
         /// <summary>
+        /// Primary key <br />
         /// 主键
         /// </summary>
         [Column(Position = 1)]
@@ -37,6 +42,7 @@ namespace FreeSql
 
 #if !NET40
         /// <summary>
+        /// Get data based on the value of the primary key <br />
         /// 根据主键值获取数据
         /// </summary>
         /// <param name="id"></param>
@@ -50,6 +56,7 @@ namespace FreeSql
 #endif
 
         /// <summary>
+        /// Get data based on the value of the primary key <br />
         /// 根据主键值获取数据
         /// </summary>
         /// <param name="id"></param>
@@ -63,6 +70,8 @@ namespace FreeSql
     }
 
     /// <summary>
+    /// Entity base class, including CreateTime/UpdateTime/IsDeleted, and sync/async CRUD methods.
+    /// <para></para>
     /// 包括 CreateTime/UpdateTime/IsDeleted、以及 CRUD 异步和同步方法的实体基类
     /// </summary>
     /// <typeparam name="TEntity"></typeparam>
@@ -84,9 +93,10 @@ namespace FreeSql
         }
 
         /// <summary>
+        /// To delete data <br />
         /// 删除数据
         /// </summary>
-        /// <param name="physicalDelete">是否物理删除</param>
+        /// <param name="physicalDelete">To flag whether to delete the physical level of the data</param>
         /// <returns></returns>
         public virtual bool Delete(bool physicalDelete = false)
         {
@@ -101,12 +111,14 @@ namespace FreeSql
         }
 
         /// <summary>
+        /// To recover deleted data <br />
         /// 恢复删除的数据
         /// </summary>
         /// <returns></returns>
         public virtual bool Restore() => UpdateIsDeleted(false);
 
         /// <summary>
+        /// To update data <br />
         /// 更新数据
         /// </summary>
         /// <returns></returns>
@@ -125,41 +137,38 @@ namespace FreeSql
         }
 
         /// <summary>
+        /// To insert data <br />
         /// 插入数据
         /// </summary>
         public virtual TEntity Insert()
         {
             CreateTime = DateTime.Now;
-            if (Repository is null)
-                Repository = Orm.GetRepository<TEntity>();
-
+            Repository ??= Orm.GetRepository<TEntity>();
             Repository.UnitOfWork = _resolveUow?.Invoke();
             return Repository.Insert(this as TEntity);
         }
 
         /// <summary>
+        /// To insert or update data <br />
         /// 更新或插入
         /// </summary>
         /// <returns></returns>
         public virtual TEntity Save()
         {
             UpdateTime = DateTime.Now;
-            if (Repository is null)
-                Repository = Orm.GetRepository<TEntity>();
-
+            Repository ??= Orm.GetRepository<TEntity>();
             Repository.UnitOfWork = _resolveUow?.Invoke();
             return Repository.InsertOrUpdate(this as TEntity);
         }
 
         /// <summary>
+        /// To completely save the navigation properties of the entity in the form of sub-tables. <br />
         /// 【完整】保存导航属性，子表
         /// </summary>
-        /// <param name="navigatePropertyName">导航属性名</param>
+        /// <param name="navigatePropertyName">Navigation property name</param>
         public virtual void SaveMany(string navigatePropertyName)
         {
-            if (Repository is null)
-                Repository = Orm.GetRepository<TEntity>();
-
+            Repository ??= Orm.GetRepository<TEntity>();
             Repository.UnitOfWork = _resolveUow?.Invoke();
             Repository.SaveMany(this as TEntity, navigatePropertyName);
         }
diff --git a/Extensions/FreeSql.Extensions.BaseEntity/BaseEntityAsync.cs b/Extensions/FreeSql.Extensions.BaseEntity/BaseEntityAsync.cs
index 3821a812..58f1300e 100644
--- a/Extensions/FreeSql.Extensions.BaseEntity/BaseEntityAsync.cs
+++ b/Extensions/FreeSql.Extensions.BaseEntity/BaseEntityAsync.cs
@@ -12,8 +12,12 @@ using System.Threading.Tasks;
 namespace FreeSql
 {
     /// <summary>
+    /// Entity base class, including CreateTime/UpdateTime/IsDeleted, the async CRUD methods, and ID primary key definition.
+    /// <para></para>
     /// 包括 CreateTime/UpdateTime/IsDeleted、CRUD 异步方法、以及 ID 主键定义 的实体基类
     /// <para></para>
+    /// When TKey is int/long, the Id is set to be an auto-incremented primary key
+    /// <para></para>
     /// 当 TKey 为 int/long 时，Id 主键被设为自增值主键
     /// </summary>
     /// <typeparam name="TEntity"></typeparam>
@@ -29,6 +33,7 @@ namespace FreeSql
         }
 
         /// <summary>
+        /// Primary key <br />
         /// 主键
         /// </summary>
         [Column(Position = 1)]
@@ -36,6 +41,7 @@ namespace FreeSql
 
 #if !NET40
         /// <summary>
+        /// Get data based on the value of the primary key <br />
         /// 根据主键值获取数据
         /// </summary>
         /// <param name="id"></param>
@@ -50,6 +56,8 @@ namespace FreeSql
     }
 
     /// <summary>
+    /// Entity base class, including CreateTime/UpdateTime/IsDeleted, and async CRUD methods.
+    /// <para></para>
     /// 包括 CreateTime/UpdateTime/IsDeleted、以及 CRUD 异步方法的实体基类
     /// </summary>
     /// <typeparam name="TEntity"></typeparam>
@@ -72,9 +80,10 @@ namespace FreeSql
         }
 
         /// <summary>
+        /// To delete data <br />
         /// 删除数据
         /// </summary>
-        /// <param name="physicalDelete">是否物理删除</param>
+        /// <param name="physicalDelete">To flag whether to delete the physical level of the data</param>
         /// <returns></returns>
         public virtual async Task<bool> DeleteAsync(bool physicalDelete = false)
         {
@@ -89,12 +98,14 @@ namespace FreeSql
         }
 
         /// <summary>
+        /// To recover deleted data <br />
         /// 恢复删除的数据
         /// </summary>
         /// <returns></returns>
         public virtual Task<bool> RestoreAsync() => UpdateIsDeletedAsync(false);
 
         /// <summary>
+        /// To update data <br />
         /// 更新数据
         /// </summary>
         /// <returns></returns>
@@ -113,41 +124,38 @@ namespace FreeSql
         }
 
         /// <summary>
+        /// To insert data <br />
         /// 插入数据
         /// </summary>
         public virtual Task<TEntity> InsertAsync()
         {
             CreateTime = DateTime.Now;
-            if (Repository is null)
-                Repository = Orm.GetRepository<TEntity>();
-
+            Repository ??= Orm.GetRepository<TEntity>();
             Repository.UnitOfWork = _resolveUow?.Invoke();
             return Repository.InsertAsync(this as TEntity);
         }
 
         /// <summary>
+        /// To insert or update data <br />
         /// 更新或插入
         /// </summary>
         /// <returns></returns>
         public virtual Task<TEntity> SaveAsync()
         {
             UpdateTime = DateTime.Now;
-            if (Repository is null)
-                Repository = Orm.GetRepository<TEntity>();
-
+            Repository ??= Orm.GetRepository<TEntity>();
             Repository.UnitOfWork = _resolveUow?.Invoke();
             return Repository.InsertOrUpdateAsync(this as TEntity);
         }
 
         /// <summary>
+        /// To completely save the navigation properties of the entity in the form of sub-tables. <br />
         /// 【完整】保存导航属性，子表
         /// </summary>
-        /// <param name="navigatePropertyName">导航属性名</param>
+        /// <param name="navigatePropertyName">Navigation property name</param>
         public virtual Task SaveManyAsync(string navigatePropertyName)
         {
-            if (Repository is null)
-                Repository = Orm.GetRepository<TEntity>();
-
+            Repository ??= Orm.GetRepository<TEntity>();
             Repository.UnitOfWork = _resolveUow?.Invoke();
             return Repository.SaveManyAsync(this as TEntity, navigatePropertyName);
         }