Most people still use WeChat, even for tech news reading. You have everything inside WeChat, which is like an OS. Some young people also use Hupu(a basketball app and forum but you can also discuss other topics).
I have WeChat as a EU user, but I can't post for some reason. In Douyin and Weibo it's even worse - I'm unable to create an account. Do you know how to overcome it? I rent Hong Kong number, but it's not enough to create accounts on those platforms.
IIRC, you also need to validate a Chinese phone number for some features. None of it is intuitive.