Zheng Yi was a notable Chinese pirate who operated in the South China Sea during the early 19th century. He was known for his leadership of a large fleet and his ability to unite various pirate factions under his command. Zheng Yi's activities contributed to the rise of piracy in the region, which was a significant issue for the Qing Dynasty. Zheng Yi was married to Ching Shih, a powerful figure in her own right, who later took over his fleet after his death. Together, they became infamous for their daring raids and strategic tactics, making them prominent figures in maritime history.