Si1 - Jing point on the Small intestine PM, located at the corner of little fingernail, on the ulna side of the hand. This point boosts the meridian in winter and disperses it at the end of the summer. In all seasons, it can treat the following disorders: When boosted(+), this point reduces secretions and when dispersed(-), it increases them(sweating, menstruation, lactation, seborrhoea). Excessive sweating(+), Hot flushes(-).