Hi, I’m Chinese,speaking Simplified Chinese.
My compatriot Thomas123 translate the Avast to Traditional Chinese , if you need, I went translate Avast to Simplified Chinese.
Though I can’t speak English, but I know some English phrase about Computer and virus. 
I think that I can work well, thank you.
Hi, thanks for your offer.
I’m glad to say that translation of Avast to both Simplified and Traditional Chinese is now complete and will be officially released in a couple of weeks.
That good news. ;D