Also spelled Cheung Po Tsai. Pirating in the South Seas, Cheng I kidnapped Chang Pao, who was the 15 years old. They soon became lovers, then Cheng adopted Chang. After Cheng's death, and a failed campaign to become emperor, Chang, who was the leader of the Red Fleet, and in command of a private fleet of 226 junks, became a colonel in the Qing Imperial navy.