Sidu (English translation: Four Rivers)
On the dorsal aspect of the forearm, on the line
connecting SJ 4 and the tip of the elbow, 5 cun above the
transverse crease of
the wrist between the ulna and radius.
- Sudden loss of voice, sore throat
- Spasm and pain of the upper extemities
Activates the meridian, benefits the ears and throat,
Perpendicular insertion .5 - 1.0 cun.