Chinese medicine believes that different times correspond to different zang-fu organs, and the corresponding zang-fu organs work vigorously during this period. For example, at 9- 1 1 at night, corresponding to gallbladder, it is generally believed that gallbladder has detoxification function. Therefore, it is recommended to fall asleep before 1 1 in the evening, which is beneficial to gallbladder detoxification. Daytime is not allowed.