These channels flow horizontally across the body. They appear more superficial than the primary channels . These are Superficial and deep relating more to wei qi (defensive qi) and blood vessels/blood respectively.
Connecting channels exist, between paired organs
e.g. Lung and colon.
The Luo of the lung is Lu 7, in practice this is used to distripute wei qi within the lung channel, and disperse blood stasis or stagnation. Often sustained emotions associated with the meridian can be cleared by the use of connecting points. For example Lu 7 can help with grief or sadness.
