百舍重趼

Explanation: One hundred miles round, foot skin and give birth to old crust. Describe the long-distance running, is very hard work. Also as "a hundred homes heavy cocoon." 　　Source: "Zhuangzi Heaven": "I have heard Master saint. I would like to see solid from afar without any hesitation, heavy callous and not a hundred homes interest." "Huainanzi repair service training": "domain shame past the South Wing of St Road independent death relies instead ... ... hundred homes in the heavy callous, not to rest, the South saw the old Dan. " Thesaurus:  Baishechongjian