I've listed this twice on threads, but in case anyone is interested here is a page of restaurants in the San Gabriel Valley. The page has the names in Chinese and English. It's pretty comprehensive and out-of-date on the Chinese restaurants. It also includes non-Chinese restaurants, like Marie Callendars and sushi joints.
If you click at the top of the page, you can access other area codes.
No ratings. Buyer beware. But if you (or someone you know) can read Chinese characters, there are hints here of several szechwan restaurants, like SHuFeng (wind of sichuan) or EmeiShan restaurant (buddhist mountain in sichuan, pretty well known).