Northern tribes advocate left, and their skirts cover left, for the sake of left. Except for the left shirt, Khufu's underpants and formal dresses are obviously different from those in the Central Plains. Confucius once praised Guan Zhong and said, "Guan Zhong is slightly slightly slightly.

Confucius, including most people in the Central Plains, thought that the left cardigan was a foreign costume, and he was dismissive of his body. Even during the Warring States period, King Wuling of Zhao, the wise monarch of the State of Zhao, wanted to strengthen his army and promote riding and shooting in Hu clothes, but many people opposed it. However, the Hu clothes used by Zhao are not the costumes of the northwest nationalities, but the original costume system of the Central Plains nationalities. Only for short-sleeved clothing, similar to the clothing of northwest ethnic groups, so it is commonly known as Hu clothing.