The Lung channel originates in the Middle Jiao and runs down to connect with the LI. Turning back, it passes up through the ST, goes through the diaphragm to enter the LU organ. It continues through the throat, emerging to the surface at Zhongfu (LU 1) and ending at Shaoshang (LU 11). Another section of the LU channel branches off at Lieque (LU 7) and runs towards Hegu (LI 4), and ends at Shangyang (LI 1) to connect with the LI channel.