Qi and blood blockages are known as qi and blood deficiencies in Chinese medicine. Meridians are like spatial channels. “Meridian” has the meaning of the path, “Luo” has the meaning of the network, meridians are like paths and water networks to contact the town village, spread throughout the body, linked to the body’s internal organs and tissues and organs. Qi and blood running in them, conveying nutrients and information, so the meridians are running the whole body blood, contact organs and limbs, communicating with the surface up and down the channel. It is very simple to understand that if the channel does not work, there will be a lot of diseases naturally. As usual, we often hear and mention the state of sub-health is the typical manifestation of the meridians do not work. If the meridian qi and blood blockage and not smooth, it will cause pain or swelling in the relevant parts, qi and blood stagnation and heat, then red, swelling, heat, pain, etc. (meridian of the actual evidence). If there is insufficient qi and blood circulation, there will be numbness and insensitivity at the lesion site, soft and shriveled skin and loss of function (deficiency evidence of meridians). If the yang qi of the meridians, i.e. wei qi, is insufficient, symptoms such as localized coldness or generalized coldness will occur (yang deficiency is cold). If the yin qi of the meridian, i.e. ying qi, is deficient in blood and the yang qi is hyperactive, phenomena such as five heartburns and heat will occur (yin deficiency leads to internal heat).