Thank you very much for posting this, Sino. I was not aware of who Kai Chen until you posted this. I have not watched all the videos, but I will. I also might try to find his book. I believe you when you say some of his claims are ludicrous, which is typical for people in positions to criticize or debate. (Of course, everyone knows the CCP and the government have admitted to many horrible disasters).
There are some wonderful photographs on his forum. I appreciate that he shares them!