They may have taken down the crosses and the symbols. Heck - they could even take down the building. I’m guessing some of the older Chinese Christians have gone through more than that - the government only strengthened the church.
I was at a missionary thing for a weekend (probably 20 years ago now). The Chinese speaker was saying how much their faith has increased - and that they are praying for American Christians to be persecuted so that our faith would increase.
I thanked the speaker for his interesting talk. And ended with “But - when you go back - can you tell them to stop praying for us!?”
:)