This is Vietnamese King Thanh Thai His Father was murdered after a mere three days on the Throne. The French Authorities interveined to put his Son back onto the Throne for a short reign in the early 1900s
Thanh Thai was a tiny bit to clever for his own good. He sought a ballencing act between appeasing the people and trying to act submissive to the French.
He desperately wanted freedom and loved his people, but he had to keep an eye out for the French. He tried to pass himself off as a dumbass so he could work both sides, and eventually the French saw through this and banished him.