All my China eSIMs are non GFW eSIMS. You can also use a Hotspot to tether to your laptop etc. They breakout via HK. Try them out and if you have any issues send me an e-mail.
can i provision from within china or do i have to do it before i go there?
My website is available in China so you can provision it from China. Of course, your phone should support eSIM. I have had quite a few people use my service in China. I am happy to give you a trial - write to me hello@akariq.com