Very simple WPF Application that checks if a proxy works for Netease Api
To make it work you should paste your proxy with the format: xxx.xxx.xxx.xxx For example: 111.11.122.7 Other things like typing http, or other stuff will make it fail.
It only makes a GET call to a random API url: http://yourProxy/music.163.com/api/song/detail?ids=[35847388] (Adele - Hello is that url ... ) If it returns something it means it worked fine. Otherwise, it failed.
It´s simple and ugly, but it has helped me when i want to find working chinese proxies.
Problem: if you put a proxy that is not from china, I think it will pass, so look for then in specific chinese proxies lists: http://cn-proxy.com/ http://www.66ip.cn/ http://proxy.mimvp.com/ http://proxy.com.ru/