First, China and Japan are mixed.

China and Japan are the same human species, the main races in China and Japan, and the first primitive humans from the Loess Plateau in Chinese mainland. They have a common ancestor and genetic genes, and they are also descendants of the Chinese people. Sino-Japanese mixed blood will not have the characteristics of the third human species.

Second, mixed blood between China and the United States.

The characteristics of Chinese and American mixed-race children are diverse. On the whole, the distinction between "Chinese and American hybrids" is mainly characterized by skin color, facial features and body bones.

Extended data

The IQ of mixed-race children is usually lower than that of their non-mixed-race ancestors.

As long as people with certain genetic differences marry, they will be hybrids in the future. There are certain genetic differences among different races, refer to the world race gene map. Scientists believe that due to genetic differences, there are differences in IQ, personality, physique and other average levels between different races.

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