The acupuncture point "EX Xiyan" is represented by "Xiyan" in pinyin and "Eye of Knee" in english and may be found:
Lateral (ST 35) and medial knee depressions.
Of many possible clinical applications, it may be considered to influence the following issues/symptoms:
While not necessarily valid clinically, KD 10 (Clears damp or damp-heat in the lower warmer - ur…), ST 35 (Knee problems. Often used with heding and the me…) and UB 40 (As the Lumbar Command Point, useful for all lumba…) are nearby.