Rodney P.R. Dawber (a clinical researcher in dermatology) of Oxford Hair Foundation mentioned in his research that East Asian men have less facial hair (beard) and body hair. Dober also found that near the Mediterranean region, men's body hair grows very luxuriantly.
According to the paper published by H.Harris in the British Journal of Dermatology, American Indians have the least body hair, while China and blacks have very little body hair. White people have more body hair and beard than black people and China people, while Ainu people in Japan have the most body hair and beard.
Human body hair is determined by genetic inheritance, which may be the result of long-term evolution with the environment. China and black people's hair follicles are not sensitive to androgens, so they have less body hair.
What you said about not having a beard is incorrect and impossible, because a long beard, like wrinkles and death, is inevitable for men of every race. When they get old, they will grow beards!
Just because of genetic differences, the age when the beard begins to grow, the shape, density, length and coverage of the beard are different, and each race is different and everyone is different.
Men in China are relatively young, so they usually grow beards at a very old age, such as their thirties and forties, or even their fifties and sixties. The older you get, the more beards you have.