I have been in China a few time ago, as you said there is no social media :)
But, I was using Whatsapp. I didn't have problem with Whatsapp, I think it is new prohibition:)
On the other hand, there are a lot of beautiful places in China, I like there so much! Have a nice journey my friend!
I was here about 7 months back and Whatsapp was working then, It's only recently that it has been blocked.