
Heche (river wagon) is an exercise for the circulation of qi inside the body. Jing and qi move in a regular route so that the outside will be linked with the inside and the body with shen, with their function much like a wagon full of cargo. Hence the name heche.

The method to be used usually is as follows: Concentrate your atten-tion on the exercise, and look into the body with your eyes. Then accumu-late the genuine qi at dantian and direct it past the zveilu point and up to the jiaji, yuzhen and hi,van points before moving down to the queqiao, chonglou and huangting points and returning to the dantian region.
Heche can be big or small. With a small heche, you may mobilize the cyclic dong of wuxing to achieve the concentration of qi through the inte-gration of water and fire. With a big one, you may generate golden elixir from behind your elbow and send it to the hi,van point and remove lead and add mercury to produce great elixir.
Heche also refers to the original qi or the genuine qi produced in qigong practice. Zhong Lu Chuan Dao Ji (A Collection of Religious Teachings by Zhong Lu) says, "In the beginning, nourish the genuine qi in the kidney, which belongs to the upright water in the north. The up-right qi produced by the original qi is heche."