Gold Jewelry Cultural Industrial Park, Zone E 1 Building. According to Baidu map, Du Wen Postgraduate Training Camp is located in Building E 1 of Zhongyuan Gold and Jewelry Culture Industrial Park, Wenzhi Road, Cao Nan Street, Guanchenghui District, Zhengzhou City, Henan Province. One-stop tutoring, training camp, one-on-one tutoring, weekend and Sunday classes, online live classes, etc.