One of the ten major Thai Sen or energy lines.

Starts in the right nostril, travel up and back inside the head, down the back of the neck, down the back, across the buttocks, along the lateral aspect of the leg to the knee and crosses to the medial aspect of the front of the leg and stops one thumb length from the navel on the right side.

Indications headache, stiff neck, sinus problems, urinary tract disorders, back pain, knee pain, liver and gall bladder pain.