How did the early China people in China go abroad? Does it cost a lot of money for ordinary China people to emigrate overseas?

Most of them were taken abroad. In fact, in the early 1990s, there was no concept of immigration at all. Just look at Titanic. The only requirement for American identity is a boat ticket.

At that time, most China people went abroad in a miserable way. When they were caught, they sold piglets. For example, in the construction of the Canadian Pacific Railway in the early years, many China workers were sold to local coolies, and so was the development of the western United States. Those who stayed behind without dying at that time became early immigrants from China.

For this group of people, they are more often described as "Chinese workers".