Leave them be. Your amateurish attempts to make contact will likely mean your only end-up speaking to Chinese State Security, get invited to China to evangelise and arrested when you land, OR you'll get them in serious trouble by being accused of plotting with "foreign agents" (you) against the Chinese State.
Chinese Christians aren't your pets. They get busted for the smallest things and there is a purge presently going on. Following Christ over there is serious shi-. Just pray for them and leave them be.
Also, someone post that hirochan-triggering wall of Chinese text just in case Pooh-bear is on patrol here. Half-way there
LOL
Also, that pic LOL
Good video. ctrl+d