You're better off delving deeper into learning the actual framework instead of studying a foreign language.

Something similar happened with NGINX a few years ago. Almost all documentation was in Russian. But once it grew in popularity a few people just translated the documentation over to English.

If you had studied Russian just to understand NGINX better, it would've been a huge waste of time, and my guess is that it'll be similar in this situation.

The caveat, of course, is if you want to study Chinese for other personal reasons. In that case, by all means.