On the other hand, if you're going to travel in China, make sure you have WeChat (similar to travel to Thailand; there make sure you have Line). INVALUABLE for communications while in China. Unfortunately, you can't use WeChat to pay unless you have a linked Chinese bank account, but for general communications, fantastic, as EVERYONE has WeChat. Who knows, you just might be able to hook up with that PRC you knew in SYD and have a personal guide while in the PRC. Of course, if you're an idiot and message derogatory things about the PRC government or leadership, maybe not a good idea. Or if you're a Uigur or a member of Falun Gong. And sure, the PRC government monitors accounts... maybe that's why those cute airport security screeners give me such a big smile as I pass through. 1st hand experience.