Originally Posted by
moondog
A and C. Or, roam with a non mainland SIM so you can forego C. I can actually get by pretty well without C btw (I've yet to find a VPN that works with my phone OS), but it is nice to be able to use Google instead of Bing or baidu.
ETA: I should also point out that VPNs don't protect people from themselves (i.e. avoid taboo topics on social media, including WeChat).
I read a How To on a Chinese forum that you can get an eSIM from Trip.com that is for Greater China with the provider HKG based at very low cost (does need to dig thru to page 2 of eSIM offers to find it). Key is to install it BEFORE entering China. Once inside China make sure data roaming is on. The eSIM will find the network used inside China. Since it is HKG based you use it just as if you are using roaming if your YS provider, have full access of everything without the need to get over the wall.
Or if you use T Mobile high end plan you have high speed roaming inside China free, with full access of sites just as if you are at home. This might be the easiest approach. I am seriously considering of switching to them just for short term covering the period we travel there.