It is considered that the Chinese in those days hated to wear Hidarimae because 'it was a savage tribe's custom'--Here, 'the savage tribe' were nomads that lived in the Northeast part and the frontier of China and mainly hunted for their living, and Hidarimae was convenient for them to shoot with a bow and arrow.
中国で左前にすることが嫌われたのは「蛮族の風習であるため」とされたが、この蛮族というのは中国東北部や辺境の地に住む遊牧民たちのことで、彼らは狩猟を主な生活として行なう上で弓を射やすいという理由で左前に着ていた。