What does perpetual calendar mean?

"Chong" in the calendar refers to "Sun Chong" and "Shi Chong" in the lunar calendar. The lunar calendar is based on the movement of the moon, which is very different from the solar calendar. In the lunar calendar, a month consists of four periods: the full moon, the waning moon, the waning moon and the full moon, and each period has a specific day and situation. It is precisely because of the uniqueness of the lunar calendar that the concept of "chong" appeared.

In ancient China, people attached great importance to the saying of "Chong" because they thought that Chong would bring bad effects to people. Therefore, in order to avoid the harm brought by rushing to life, many folk customs are still circulating today. For example, in daily life, people don't break their hair and settle in the mountains when they rush to Japan; Important ceremonies such as marriage and entering the house also avoid rushing to Japan. These are all to avoid the adverse effects of "rushing to run".

Although in modern times, people no longer respect "Chong" as in ancient times, in some special fields, people still use the knowledge of "Chong" in calendars. For example, in folk astrology and horoscope fortune telling, time impulse and day impulse are still widely used. In addition, some scientific studies have also found that there is a certain connection between rushing to the sun and health and safety. These reminders that people pay close attention to the lunar calendar often help to avoid potential risks and harm.