These points follow no common pathway: that is precisely what sets them apart. They are distributed across the whole body and classified here by anatomical region — head and neck, chest and abdomen, back, upper limb, lower limb. Their location is defined in relation to bony or muscular landmarks, or to other points, rather than by their place in a chain. Several occur in symmetrical series, such as the Sishencong around the vertex or the Baxie between the fingers.
Each extra point has its own indications, generally very targeted: Yintang calms the spirit and clears the forehead, Taiyang treats temporal migraine, Dingchuan calms asthma attacks, the Xiyan relieve the knee. Their value lies in that specificity: where a meridian point acts through an entire system, a curious point often answers the symptom directly. They are frequently combined with meridian points in protocols, as a complement rather than a replacement.