According to a certain document, there is at least 3,000 years' history of Chinese people wearing wooden clogs. “Historical Records”, written by Sima Qian,recorded that Duke Wen of Jin, one of five hegemonies during the Spring and Autumn period, had once worn a pair of clogs to commemorate the death of Jie Zitui,a loyal minister of his. As a result,we have a phrase “zu xia” (under feet).