Lung 4 Xiabai Clasping the White By Jade TCM In Lung Acupuncture Points Posted Mar 7, 2018 On the antero-lateral aspect of the upper arm, 4 cun inferior to the axillary fold and 5 cun superior to Chize LU 5, in the depression between the lateral border of the biceps brachii muscle and the shaft of the humerus.