What are you saying sorry to?Sorry, but China has its own "Facebook" called Wexin a.k.a WeChat and it's like Facebook, but also integrates payments (think combining Facebook with all the info card companies - VISA, AmEx etc - have on you) and allows "installing" and using mini-apps from within the main app for things like hailing cabs, ordering food, e-transit card, so think of bundling social and payment info with what Apple and various apps have on you.
Edit: Oh, and everyone's on it. People don't even text, they text on WeChat, because an SMS costs 0.1 RMB ~ 1 cent and WeChat uses data allowance which is paid for in advance.
China warning about FB, and China having a good social network on their own, are not mutually exclusive. Social networks have existed since the dawn of the internet, but this warning was specificically about FB.