In the1850s, the immigrants from China increased greatly. At the same time, due to the Taiping Rebellion and the political turmoil in southern China, China people generally came from Guangdong. Based on the gold rush in California, the western United States was in urgent need of labor. 1868, the United States and China signed the Sino-US Trade Treaty, in which the fifth paragraph stipulates that people who wish to live permanently or become naturalized in the United States must listen to their freedom without hindrance. This treaty opened the door for the United States to attract a large number of China workers to China.
From 65438 to 0877, the California economy turned into a downturn, and the first wave of Chinese exclusion appeared in the United States. 1880, the United States and the Qing court signed the Beijing Treaty, the first paragraph of which stipulated that the number and years of China people coming to the United States should be restricted. 1882, the United States passed the Chinese Exclusion Act to ban immigrants from China.
The second wave of China immigrants went to the United States twice as students from Taiwan Province Province after the lifting of the United States immigration law 1952 and 1965. During the period of1970s, the economy of Taiwan Province Province developed gradually, and such immigrants began to decrease at the end of1970s. 1977, Chinese mainland began to send overseas students to the United States. By the 1980' s, there were more and more such immigrants.
In addition, some modern immigrants came from Fujian and sought jobs in the United States, with new york as the center and concentrated in the northeast.