Because Guangdong is the most developed province in China, there are two first-tier cities in China, Guangzhou and Shenzhen, as well as economically developed cities such as Dongguan, Foshan, Zhongshan, Zhuhai, Huizhou and Jiangmen, and Nanning, the most developed city in Guangxi, is a third-tier city in China. It is almost the same level as Maoming Zhanjiang, which ranks eighth and ninth, and they have definitely gone to Guangdong.