Woodcut illustration from an edition of 1726 (4th year of the Yongzheng reign period of the Qing dynasty) -- paediatric complexion diagnosis chart, showing the sectors of the face corresponding to different limbs, articulations and parts of the torso. The inner canthus of the eye corresponds to the chest,the outer canthus corresponds to the shoulders, the area below the cheekbone corresponds to the thighs and groin, the area outside the cheekbones corresponds to the arms and hands, the corners of the mouth correspond to the shin, and the cheek corresponds to the feet.
