《黄帝内经·灵枢·禁服》
人迎比寸口脉的脉象盛大一倍，是病在足少阳经；盛大一倍且躁动不匀的，是病在手少阳经。
人迎大一倍于寸口，病在足少阳；一倍而躁，在手少阳。
If the ren ying is twice as vigorous as the cun kou pulse, the disease is in the foot shaoyang meridian; if it is twice as vigorous and restless, the disease is in the hand shaoyang meridian.