Zheng Qi (pirate)

He was born Zheng Yaohuang in Xin'an County, Guangdong, Qing China (modern Shenzhen and Hong Kong), in 1760.

From 1788 to 1799, Zheng frequently attacked the southern coast of Qing China together with Mo Guanfu, Liang Wengeng (梁文庚) and Fan Wencai (樊文才).

A few years later, Zheng Qi gave him a captive female as his bride and seven hundred pieces of silver (liang) to set up store for the pirate trade.

Tay Son army was defeated by his rival the Nguyen lord in 1801, and his three comrades Mo Guanfu, Liang Wengeng and Fan Wencai were captured.

[clarification needed] He was appointed as the Grand Marshal (Vietnamese: Đại Tư Mã, chữ Hán: 大司馬) by the Tay Son emperor Nguyễn Quang Toản.