Hakka is a Han nationality whose mother tongue is Hakka. It is one of the natives of Guangdong, Fujian, Jiangxi and Taiwan Province provinces in the south of China. Hakka, as an ancient Han immigrant group in the south, is one of the most influential nationalities in the world.

It is estimated that there are about 80 million Hakkas in the world. Among them, about 50 million people are distributed in more than 80 cities and counties in Guangdong, Jiangxi, Fujian, Guangxi, Sichuan and Hainan provinces. There are about 25 million local Hakkas in Guangdong province, accounting for one-third of the local ethnic groups in Guangdong. About 6 million people are distributed in Hongkong, Macau and Taiwan Province Province, and about150,000 people are distributed in more than 80 countries and regions such as Indonesia, Malaysia, Thailand, Singapore, Vietnam, the United States, Peru and Mauritius [6-7]. Hakka dialect is also an important part of the local language.

Huizhou, Meizhou, Shenzhen, Ganzhou, Longyan, Heyuan, Shaoguan, Hezhou, Sabah and Hsinchu are important Hakka cities, and Meizhou, Huizhou, Ganzhou and Tingzhou are called "four Hakka States".