Perhaps you should read this book. The first chapter is about his dad, Ai Quing, being deported to a work camp in Xinjiang during the Cultural Revolution, along with his two sons.

https://en.m.wikipedia.org/wiki/1000_Years_of_Joys_and_Sorro...

The solution is not technical. My dad had a TV sat dish during the communist regime. He was scheduled to be arrested in '90, but the regime fell during the winter of the previous year.