Why can you see foreigners from Japan, South Korea, Vietnam and Russia in China, but not from Europe, America and North Korea? There are too few foreigners in Europe and America.

The distance between Shandong Northeast and South Korea is very close, and Koreans do more business. Moreover, there are many Koreans in China, and some people can't tell whether they are Koreans or Koreans from China.

Southeast Asia is close to Yunnan and Guangdong, and going to Fujian and Zhejiang is mainly for business.

Northeast China and Xinjiang are close to Russia, and there are many border trade. Central Asia is close to Xinjiang, so it is normal to have many people. India and Pakistan are close to Tibet, but the Himalayas, so there are more Xinjiang.

Because there are many people who believe in Islam in Xinjiang, there are also many tourists and businessmen in Islamic countries. Because Afghanistan is such a chaotic country, people usually go to the Gulf countries when they go out (and it is not easy to walk with the neighboring Wakhan Corridor).

The United States has a large population, mainly at home, and few people may come to China. But because the United States is an immigrant country, many Americans are not white, but can be black, Indian, Indian, Southeast Asian and even Chinese. For example, my former boss was a Chinese-American, and he looked totally from China. There are many American commercial organizations in China, all of which are in big cities and have great influence.