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Local Launcher Cannot Log In
If you previously used a different launcher to play the game, and after using Heitu's Tangtang Proxy, the previous launcher no longer works.
Solution
Change the Tangtang port to 1119, then click Launch Game. Then log in using your local launcher.
How It Works
When launching the game with Heitu, Heitu sets the first line of "GameInstallDir\WTF\config.wtf" to:
SET portal "127.0.0.1:port"
For example, it may have been SET portal "127.0.0.1:1119" before, and after logging in with Heitu it changed to SET portal "127.0.0.1:9000".
Manually edit the file, or change the Tangtang port to 1119 and log into the game once to resolve the issue.