When Lee Kai-Fu talked about the cause of his illness, he mentioned that it could be due to a chronic lack of sleep. In fact, sleep is indeed related to the occurrence of cancer. In the course of our clinical treatment of cancer patients, we often ask patients about their sleep, and almost most of them have the experience of poor sleep. Is there really a link between sleep and cancer development? The United States Stanford University Medical Research Center scientists have proved that the correct way to sleep can prevent the body tissues from being attacked by cancer, and for those who already have cancer, regular alternation between sleep and sleeplessness can alleviate the condition and enhance the therapeutic effect. It is well known that the cycle of sleep and sleeplessness has an effect on the production of certain hormones, and that life activities in human tissues are regulated by specific hormonal indices. Here is a typical example: at night, the body produces melatonin, which has antioxidant properties that protect the body from oxidative damage to deoxyribonucleic acid (DNA), while at the same time inhibiting the production of another hormone, estrogen, which is known to promote the growth and development of certain tumors. It also inhibits the production of another hormone, estrogen, which is known to promote the growth and development of certain tumors. Another circadian mechanism that affects tumor cells is the diurnal variation of the hormone cortisone, which peaks in the early hours of the morning and falls off sharply during the day. It can have a dramatic effect on the body’s immune system and, of course, on the body’s resistance to tumors. Therefore, if the secretion pattern of the hormone cortisone is disrupted, the body’s immune system will be destroyed, and the consequences can be imagined. Modern research has shown that the majority of women with a high incidence of breast cancer work night shifts. Similarly, animal experiments have also shown that regular sleep disruption can lead to accelerated growth of cancerous tumors in animals. “Sunrise and sunset is the natural routine of people’s life. According to Chinese medicine, normal sleep can ensure the normal operation of human body’s qi and blood, and the coordination of internal organs’ functions. On the operation of blood and qi, different time will flow to different organs and meridians. Generally speaking, in the morning, 7-9 o’clock, qi and blood flow to the stomach; 9-11 o’clock, flow to the spleen; 11-13 o’clock, flow to the heart; 13-15 o’clock, flow to the small intestine; 15-17 o’clock, flow to the bladder; 17-19 o’clock, flow to the kidneys; 19-21 o’clock, flow to the pericardium; 21-23 o’clock, flow to the Sanjiao; 23-1 o’clock, flow to the gallbladder; 1-3 o’clock, flow to the liver; 3-5 o’clock, flow to the lungs; 5-7 o’clock, flow to the large intestine. point, flows to the large intestine. From the time law of qi and blood operation, 21-23 o’clock and 23-03 o’clock are the two key stages of sleep. 21-23 o’clock Sanjiao meridian is the most prosperous, and Sanjiao leads to all veins, 21-03 o’clock is the best time to care for the liver and gallbladder. Gallbladder gas is the main ascending, “Suwen・six sections of the theory of hidden signs” said: “Where eleven organs depend on the gallbladder also.” Jin Yuan, one of the four great Li Dongyuan in the “Spleen and Stomach Theory” said: “Gallbladder, Shaoyang spring rising gas; spring rise is everything safe, so gallbladder gas spring rise make, then the rest of the organs from.” And the liver is the sea of blood, “Su Wen, the five viscera generation theory” said: “people lie down in the blood to the liver. Liver blood is sufficient to make the blood and qi full of veins, organs and meridians to be moistened. If this law is violated, it is easy to affect the function of San Jiao, liver and gallbladder, resulting in abnormal operation of qi and blood, which creates possible conditions for the occurrence of cancer.