Data-only eSIMs (e.g. ones you get from Airalo and apps like that) are not going to cut it though. You need a "full" eSIM that gives you a real number and even then, it's not a guarantee that your traffic will be routed via the country eSIM is from. Tello does route (or rather, exit) via US for example, but it's 2¢/MB.

Chinese forums / blogs have a lot of information about this stuff. I usually ask ChatGPT to translate "Research topic re: some form of circumvention and give me forum posts and blog posts about it" to Chinese, then paste that into DeepSeek with search enabled and just let Chrome translate the responses. Does a really good job. At least better than what I can manage with Baidu.