(1) After the founding of New China, China took the slogan "Women hold up half the sky" and called on women to take up social jobs like men. Cheongsam is obviously not suitable for "working women"
Since ancient times, Japanese women have not adapted to the main labor force of society. Especially for married women, taking care of children is their main responsibility. At most, after the children go to school, housewives do a little hourly work to subsidize their families.
Secondly, because China experienced the Cultural Revolution of 10 in the last century, there is little difference between women's clothing and men's clothing, and they are basically "black, blue and gray cloth uniforms". The "cheongsam" that highlights the female curve obviously does not conform to that era.