Sun Peiyuan won the first gold medal awarded at the Games with an acrobatic victory in wushu's changquan discipline ahead of Indonesia's Edgar Marvelo.
The competition was all over within an hour, with Sun scoring 9.75 to claim a gold medal in the same city where he won the world title in 2015.
Marvelo, who was inspired to take up wushu after watching movies starring Jet Li, Jackie Chan and Bruce Lee, gave the host country a silver at 9.72 and Tsai Tse-min of Taiwan picked up bronze.
Wushu, a Chinese martial art that was introduced to the Games program in 1990 and translates to "long fist," has been something of a gold mine for China. "I knew if I perform well I can win the gold. So the pressure from the Indonesian athlete was mainly due to him competing in his home ground," Sun said. "I wanted to thank everybody for the support. I am glad that I didn't let you down."