The Socialist Republic of Vietnam (hereinafter referred to as Vietnam) covers an area of 329556 square kilometers. With a population of 96.2 million, there are 54 ethnic groups. The Jing nationality accounts for 86% of the total population. The population of Dai Yi, Dai, Mang, Chinese and Nong nationalities exceeds 500000. The main language is Vietnamese (official language, common language and main national language). The main religions are Buddhism, Catholicism, Hohhot and Gaotai.