1) nearly hourly MMS messages to my flip phone from unknown numbers with an unknown attachment. Since my phone was bought outside China, the MMS attachment didn't automatically open the likely spyware.
2) Being followed and monitored by plainclothes policemen
3) Having my hotel room searched while I was away. Having police come to my hotel room to interrogate me but lacking access because I had the only key to the room (very very cheap hotel).
4) Armed convoys of Chinese army soldiers constantly going up and down major streets.
The originally intention ten years ago was massive surveillance and intelligence gathering. AI and facial recognition are just making this easier and far less costly for their government.
It's clear now that China is moving towards dictatorship, not democracy.