Chinese Apple ID allows you to download any app on the Chinese iTunes Store.
some apps are only available for Chinese users. these apps include free music streaming service like QQ Music, Netease Music, Sogou Music.
bike sharing apps include OFO bike, Mobike are not available on US iTunes Store.
You can use Maps service like Baidu Map, Tencent Map, Gaode Map to download city maps inside China. good tool for travelers to China.
after payment, You will receive Chinese Apple ID email and password.