Dongtaikang Road, Erqi District, Zhengzhou City, Henan Province. According to Baidu map, Zhengzhou Guang Cai Market is located in DongTaikang Road, Erqi District, Zhengzhou City, Henan Province. Zhengzhou, referred to as "Zheng" for short, was called "the world" in history, and was called Shangdu in ancient times. Now it's called Greentown. Henan Province governs prefecture-level cities, provincial capitals and megacities.