Briefly. Liver, wood, foot syncopal meridian, heart, fire, wood begets fire. Lesser Fire generates anger, stronger Fire eats Qi, so the proposition itself is not quite right. Liver body yin, but use yang. The yang used comes from the kidneys, spleen and stomach. Where does Yang come from? It is about the formation of Wei Qi: Wei Qi originated in the kidney, take funding from the spleen, and propagate in the lungs. Its qi fills the body, smokes the skin and moisturizes the hair, as if irrigated by mist and dew. At present, I do not see the complementary liver yang, the liver is the blood of the organ, qi and blood, if there is a blood deficiency, the long term is not born of yang.