Promoting blood circulation, removing blood stasis and dredging collaterals. According to the data of Inquiry 39 Health Network, Biboting's shoulder and neck dredging mainly has the functions of promoting blood circulation to remove blood stasis and activating blood circulation to dredge collaterals. Shoulder and neck, the name of the strange point outside the meridian, is also called hand shoulder and shoulder. It is located in the depression of acromioclavicular joint of shoulder, that is, the large intestine of hand Yangming passes through acromioclavicular joint point through the upper half, counting 2 points from left to right.