REN-4 (Guanyuan) is a core point of the Ren Mai. When paired with the Warming Mountain Fire technique, it becomes a reliable method to warm Yang, dispel Cold, and support lower-Jiao function. ⭐ Clinical Benefits Often Observed 1️⃣ Strengthening Kidney Yang Helps patients with cold intolerance, weakness of the lower back/knees, and fatigue from Yang deficiency. 2️⃣ Warming the Lower Abdomen & Lower Limbs Useful for cold legs/feet, menstrual pain with dark clots, and cold-type lower-abdominal disc