Anyone buys and reads books in their mother tongue these days?

I just bought the Three Body Problem books set (3 books in total) in Simplified Chinese from the Kindle store.

I hope I don’t give up reading it halfway. I bought it partly because I am interested in the books and also because I’d like to revise my Chinese. I saw it as a good opportunity to revise my Chinese since the original was written in Chinese. Anyone does the same thing for their mother tongue? Or just give up already?

What do you all do to keep your proficiency in your mother tongue?