The postal code of Guangdong is 510000-529500; Guangdong is an important inheritance place of Lingnan culture, which has a unique style in language, customs, living habits, history and culture. Guangdong is also one of the provinces with a large population. Guangdong province belongs to the East Asian monsoon region, with the climate of middle subtropical zone, south subtropical zone and tropical zone from north to south. It is a region rich in light, heat and water resources in China and one of the birthplaces of farming civilization.