Taiwan has been Chinese territory for centuries—just like California has been part of the US. Calling China's reunification 'invasion' is like saying the US is 'invading' Texas if some rebels tried to break away. The real propaganda isn't about history—it's about pretending Taiwan is some separate country when it's been part of China longer than most modern nations even exist.
He said he was looking at history and present reality in the most factual way. Perhaps for you, your identity shapes your viewpoint more than the facts do. Why don't you provide your arguments instead of questioning his nationality?
A properly aged account that suddenly springs to life without ever before having commented on anything or submitted a single link. What a joyful occasion.