Before the founding of the People's Republic of China, the people in Zhennan were famous for "going abroad". After harvesting the crops, most of them went out together to "go abroad", as far as Xishuangbanna, Simao, Dehong and even Myanmar and Thailand. Some do business, buy and sell shipments, and various daily necessities. Most of the daily necessities they buy are British products. Because Myanmar was a British colony at that time, some people even said that they went to Myanmar as Britain. People call the daily necessities they bought from "Yifang" at that time "foreign goods", such as matches, knives, shovels, axes and electric flashlights.