Filter -> spam folder

I get a lot of spam. Often it's in Chinese (I think). I don't speak Chinese. I want all email in Chinese (or whatever this is) to go to my spam filter.

A while back, I set up a rule to send all of these messages to my trash so at least I don't have to see them. Periodically, I go through my trash and report them all as spam. I've been doing this for years. They still don't get caught as spam.

I would consider my problem solved if I could send emails that match my filter criteria into my spam folder.

(Of course, if Gmail recognized them as spam by itself, that'd be even better.)