How do you understand transnational marriage?

Transnational marriage is an extremely complicated issue. For those partners I met during my trip to China, I think we should do what we can. People all over the world are the same. Cross-border marriage is the marriage of people from two different countries, with a wide range. If you find a Mongolian from China, it is also an international marriage, although it is generally impossible. Most of the early transnational marriages occurred between developed countries, because there were a large number of quality inspectors in these countries. Later, most transnational marriages occurred between developed and developing countries, because third world immigrants became the main body of transnational marriages. You know that finding a person who is not of China nationality is a transnational marriage, even if you find a man/woman who has just joined a foreign nationality. So for cultural barriers, I think it depends entirely on the object. Why do people think of China and white or black people when they mention transnational marriage now? Actually, it's because most people in China got married abroad.