how to remove hacked content from google index.

Malware script was added into my server and this hacked content was created and indexed. I have removed the script. The CHINESE urls created by script are still there. When I open them, my sites's homepage opens. How can I remove them?

Google has methods to block URLs like using metatags, robot etc. But I dont know how to implement them.

Do not worry. If you have already removed the script, the urls will be automatically be deindexed in the next google crawl.

Meta tags and robots method work when you are trying to keep existing urls out of google's index. You have done your part, now just wait.

Be sure to do this:

https://www.google.com/webmasters/tools/removals

Remove individually or at directory level through WMT.