World Trade Plaza Gold and Jewelry City. It is the largest gold wholesale market in Wuhan. He is near Jiefang Avenue in Hankou, Wuhan, and mainly deals in gold, platinum and K gold. Wuhan is the largest city in central China, the only sub-provincial city, the most prosperous city in China and the regional central city of People's Republic of China (PRC). World Trade Plaza Gold Jewelry City is located near Zhongshan Avenue, Jianghan District, Wuhan.