Hi Wei Li,
That would be great! no-one has been maintaining that for a long time.
Can you click the image at the bottom of the Translating mojoPortal article to sign up for an account at Amanuens?
Once your account at Amanuens is activated I can assign you the Simplified Chinese translation, and then you can edit the resources in a web page and your updates will synchronize with our source code repository each morning.
We have partial translations for zh-CHT and zh-CN, can you tell me which one of those is Simplified Chinese? Can I assign both of those to you or just one of them?