When did the number of people going abroad in modern China reach its peak?

From the Opium War to the eve of liberation (184 1- 1949). It is the climax of large-scale immigration of overseas Chinese. During this period, the number, scale, distribution and experience of overseas Chinese going abroad were unprecedented. The reason is nothing more than domestic and foreign. At home, because of political darkness, constant wars and economic bankruptcy, people are in dire straits and are eager to find a way out. In foreign countries, due to the crazy economic plunder of the colonies by imperialism, a large number of cheap labor forces are urgently needed for development. As a result, batches of "contract Chinese laborers" (commonly known as "piglets") were sold abroad, which became the main way for China immigrants in this period. This kind of trafficking started at the end of 18. 65438+ reached its climax in mid-2009 and began to decline in the early 20th century. In the past 65,438+000 years, about 7 million people in China were trafficked all over the world, thus laying the foundation for overseas Chinese to spread all over the world today. The number of overseas Chinese in this period has reached120,000.