The postcode of Chongkou, Houjie, Dongguan is 523947. Yongkou Village is located in the southwest of houjie town, Dongguan City, Guangdong Province, with a total area of 3.98 square kilometers. It has seven groups: Dongshe, Nanse, Xishe, Beie, Shuibei, Honghualin and Shijiao. There are more than 5,500 villagers, and the foreign resident population is about10.8 million. The village took the opportunity of five renovations to effectively improve the living environment of the masses. The greening and sanitation work is market-oriented, with a green coverage rate of 33%, and won the title of national green well-off village.