Trashing your preferences is a good first step (and often the trick) if AE won't start up.
Give this a shot. (This is from a few versions ago, but info should still be current.)
If that doesn't do it, try posting more info about your system and AE version, so we can better diagnose your issue.
Try running it as Admin
Licensing Error: Your subscription entitles you to Chinese simplified product versions. Please verify the language settings in your OS, browser, and software download are set Chinese Simplified. If you continue to have installation issues, please contact support. (www.adobe.com/go/support
Are you running Windows in Simplified Chinese? It is the only supported OS for Chinese currently. Please let us know if you need assistance.