Answer:
Guandong.
Step-by-step explanation:
Guandong province is the wealthiest region of China. It´s a manufacturing and export center, the largest economic hub. More than 26% of Chinese exports originate in this area. It has become a symbol of succesful economic reforms that have made China the second world economy. Guandong and the Pearl River Delta include such modern cities as Shenzhen, Guangzhou, Zhuhai, Foshan, Dongguan, Jingmen, and the two special administrative regions of Hong Kong and Macau.