Do Koreans have any historical ties with Koreans in China?

Koreans in China are descendants of Manchu (Koreans always want to get involved in this point), Koreans are authentic Koreans, and Koreans are descendants of many nationalities, so they are called Koreans. According to the latest research results of anthropologists, historians and geneticists in the world, the above three people belong to different races in Northeast Asia.

Koreans in China. This is a group of ethnic minorities living in Yanbian, China. Although they speak Korean dialect, according to the analysis of anthropologists in the world, they are significantly different from the other two Koreans in physical characteristics and appearance. Especially from the facial features of the head, the Koreans in China are obviously the faces of Manchus in Northeast China, that is, they are descendants of Manchu with delicate facial features and distinct eyebrows. Historians' research also shows that Korean people in China are descendants of Manchu people. Due to historical reasons, Manchu people in this area often have economic contacts with Koreans, and they also intermarry. Over time, they have been greatly influenced by Koreans, and their language and some living habits have been assimilated by Koreans. According to the research of geneticists, the DNA of Korean in China is very similar to that of Manchu, but it is quite different from that of Koreans and Koreans. From the genetic point of view, the ancestors of Korean people in China should be Manchu.

Korean. This is a group of people with very complicated composition. Anthropologists around the world have noticed that Koreans today look different and have little in common. Unlike Koreans, they look similar and give people the feeling of being a family. Koreans are not like this, there are all kinds. If you insist, it's just what people often say about small eyes. Anthropologists have concluded that Koreans today are descendants of a multi-ethnic group. Historians' views support this statement. World history shows that South Korea has been effectively managed by China for thousands of years, which was also confirmed by former South Korean President Roh Moo-hyun's speech to US President George W. Bush. President Lu said: China has invaded South Korea hundreds of times and will not get too close to China. Although this is to please the President of the United States, it proves the historical fact that China ruled Korea for thousands of years and hundreds of generations. World historians believe that it was China's rule that made South Korea step into the world of human civilization from an ignorant society, and people from all generations in China went to South Korea for thousands of years, intentionally or unintentionally, to improve the race of South Korea. After that, the Japanese ruled Korea and immigrated to Korea crazily. The race in South Korea was forcibly improved once, this time with a wide range and far-reaching influence. In the last hundred years, American soldiers forcibly landed in Incheon and have lived in South Korea ever since. Therefore, Koreans have gradually improved under the effective management of Americans. Although this time is not long, I don't know if there is an end, because Americans don't want to leave. So historians also prove that Koreans are not pure. In addition, geneticists have also confirmed the diversity of DNA components of Koreans today through scientific DNA analysis, which further shows that Koreans are not a single nation. But in terms of genetics, Koreans should be excellent, but it seems that they have not inherited the excellent genes of these ethnic groups.