Cold blood and poor circulation lead to stagnation and blood stasis. The key points are warming the middle warmer to relieve pain, thin and white tongue coating and slow pulse. Blood stasis often turns from heat to fire, resulting in blood heat. Blood heat, fluid injury, fluid consumption, blood boiling, fluid deficiency and blood dryness are unfavorable; Or heat burns blood collaterals, forcing blood to rush, leading to bleeding, and blood stasis is blood stasis. Blood heat leads to blood stasis, such as the syndrome of blood accumulation in the lower jiao described in Treatise on Febrile Diseases, which makes people crazy. Skin spots caused by warm diseases entering the blood; Miscellaneous diseases, liver and gallbladder heat accumulation, liver fire, liver yang, wind disturbance, leading to first-class blood sugar.