This Youtube video, apparently taken by the nice young couple who are featured in it, includes part of a church service, somewhere in Shanghai. It has to be an official church, wny? Because its in a church building which means its been registered with the government.
The Chinese have a long experience with religious rebellions, so they watch them carefully.
https://www.youtube.com/watch?v=RnXJY7kqJXk
Some nice scenes of Shanghai at night later in the video.