Dadun dà dūn · 大敦

Location. On the great toe, 0.1 cun from the corner of the nail, on the lateral side of the distal phalanx.

Category. Jing-Well point 井穴

The Liver channel starts here, at the corner of the great toe nail. The name means "great mound" and records the fleshy prominence at the base of the toe. Classical lists mark it as the first point of the Foot Jueyin line; the record is of position and sequence, not of an outcome.