It will take some time to attract the chinese to the XMR forum on 8BTC and build a community, meanwhile some further updates will improve the usability. It is just important to start and I think it is a good way to let XMR grow in China.
https://monerohash.com/nodes-distribution.htmlalready 48 Chinese nodes as it seems
I think nodes more tells us where Moneros are mined then whee are used. But yes this is only data we could use to see where are most Monero users.
But if we just stop at miners, 4% of Moneros being mined in China is a bit low. There should be more in Japan and India also. Being active on such forums, that are tech and crypto foums, will for sure get us more miners from China.