謂如手陽明流入足陽明是上流下也．本非足經(jīng)病當于手經(jīng)中求之．是知治足經(jīng)者非也．亦有下而流上者．其余諸經(jīng)相實通者皆然．更有支別流入者亦有同鄰而病者．合為表里者鄰也．亦有夫婦各相傳受者．甲傳巳之類．脾傳胃之類亦是．皆當求責之．凡言虛實．皆當于子母中求責之．