Han's first surname was in Hancheng, Shaanxi Province. The reproduction and development of the Han nationality mainly includes three periods: Spring and Autumn Period, Warring States Period, Qin and Han Dynasties, Wei, Jin, Southern and Northern Dynasties and Tang and Song Dynasties. The population of contemporary Han surname has reached 7.6 million, ranking 26th in China, accounting for 0.6 1% of the national population. During the 600 years from the Ming Dynasty to the present, the population of Han surname has surged from 620,000 to 8.2 million, increasing by more than 13 times, and the growth rate of Han surname population is the same as that of the whole country. From the Song Dynasty to the present, the growth rate of Chinese and Korean surnames in 1000 is V-shaped. In Shandong and Hebei provinces, it accounts for about 35.6% of the total population of Han surname, followed by Shaanxi, which accounts for 32% of the population of Han surname. Henan is 14% of contemporary Korea. The whole country has formed a province with central Shandong as the center, less southeast, northeast and west, and less Korean surnames south of the Yangtze River. In the past 600 years, the population movement of Han surname has moved back strongly from southeast to Central Plains and North China, which is greater than that from north to southeast and south. At the same time, the Han people north of the Yellow River tend to emigrate to the northeast. The schematic diagram of the distribution frequency of Han surnames in the population shows that the Yangtze River basin is divided into high-frequency northern region, low-frequency southern region and western region. In Shanxi, Hebei, Shandong, Henan, Beijing and Tianjin, central and eastern Inner Mongolia, Liaojihei, Ningxia in northern Shaanxi, northern Anhui, Jiangsu and other places, the proportion of Korean surnames in the local population is generally above 0.88%, and some of them reach 1.6%, accounting for about 27.8% of the total land area, and about 66.5% of Han surnames live there. In southern Shaanxi-Gansu-Ningxia, most of Gansu-Ningxia, eastern Qinghai, northwestern Xinjiang, southern Anhui-Jiangsu, Shanghai, Hubei, Chongqing, northern Sichuan, northern Zhejiang-Jiangxi, northern Hunan and Guizhou, and Hainan, the proportion of Han surnames in the local population is generally 0.44%-0.88%, and its coverage area accounts for about 2l% of the land area, and about 20% of the Han population lives.