Originating from the heart, it belongs to the heart system, retreats back up the lung meridian, and superficially exits at the inner edge of the upper limb, passing through the elbow, the sharp bone end of the back of the hand, entering the palm, and exiting at the ulnar side of the little finger (Shaoshang acupoint).
Recommended for players of both internal and external skills (damage from yin, yang, hard, and soft skills);
Recommended index for internal skill players: ★★★★ Recommended index for external skill players: ★★★