Hi Mosen, I feel your frustration too, the things I've found that help are examining fresh broken surfaces rather than the weathered outside of rocks, and using a microscope or hand lens to search for any minute crystals in cavities or vugs. The other thing as you are doing, is trying to understand the local context (which I've found can be very local, geology can change over a few hundred metres). Also mindat is really important resource too, both the database and the forums - but you've found that already :)

not sure if you have a broadband and unrectricted access to the internet - in an ad-hoc search I found this presentation that shows a quite rich mining industry and ore repositories all over the country:
https://www.cgs.gov.cn/ddztt/kydh/2017kydh/kjcx/201709/P020170921526280598760.pdf

best

Marc