Add Chinese version

SeaORM/docs/01-introduction/02-async.md

@@ -4,7 +4,7 @@ Async programming in Rust is a recent development, only having been stabilized i
 
 The first thing to learn is the [`Future`](https://rust-lang.github.io/async-book/02_execution/02_future.html) trait. It's a placeholder for a function that will compute and return some value in the future. It's lazy, meaning `.await` must be called for any actual work to be done. `Future` allows us to achieve concurrency with little programming effort, e.g. [`future::join_all`](https://docs.rs/futures/latest/futures/future/fn.join_all.html) to execute multiple queries in parallel.
 
-Second, `async` in Rust is [multi-threaded programming](https://rust-lang.github.io/async-book/03_async_await/01_chapter.html) with syntactic sugar. A `Future` may move between threads, so any variables used in async bodies must be able to travel between threads, i.e. [`Send`](https://doc.rust-lang.org/nomicon/send-and-sync.html).
+Second, in multi-threaded async executor, a `Future` may move between threads, so any variables used in async bodies must be able to travel between threads, i.e. [`Send`](https://doc.rust-lang.org/nomicon/send-and-sync.html).
 
 Third, there are multiple async runtimes in Rust. [`async-std`](https://crates.io/crates/async-std) and [`tokio`](https://crates.io/crates/tokio) are the two most widely used. SeaORM's underlying driver, [`SQLx`](https://crates.io/crates/sqlx), supports both.
 

SeaORM/docusaurus.config.js

@@ -28,6 +28,10 @@ module.exports = {
   organizationName: 'SeaQL',
   projectName: 'sea-orm',
   trailingSlash: true,
+    i18n: {
+    defaultLocale: 'en',
+    locales: ['en', 'zh-Hans'],
+  },
   themeConfig: {
     colorMode: {
       respectPrefersColorScheme: true,
@@ -80,6 +84,10 @@ module.exports = {
           position: 'right',
           dropdownActiveClassDisabled: true,
         },
+        {
+          type: 'localeDropdown',
+          position: 'right',
+        },
       ],
     },
     footer: {