Liu Chaoxi, there are thousands of tides, and the meaning of moving forward day and night is in it. There are thousands of tides to adapt to thousands of societies, understand right and wrong, and have insight into all phenomena in the world. Tides are formed by the combined force of the sun and the moon. Must absorb the essence of the sun and moon. Morning and evening also refer to time. Knowing morning and evening means knowing your whole life. You have a peaceful life and great ambitions. Morning refers to seniority, and Xi implies the Chinese Valentine's Day in the lunar calendar.