The traditional lunar calendar in China was used as a guide in ancient times.

Lunar calendar! Lunar calendar, also known as summer calendar, lunar calendar and old calendar.

Lunar calendar is a calendar used in parallel with Gregorian calendar in China at present. People used to call it the "lunar calendar", but it is actually a kind of lunar calendar, that is, the summer calendar, rather than the real "lunar calendar".

Lunar calendar, also known as summer calendar, lunar calendar and old calendar, is one of the traditional calendars in East Asia.

The lunar calendar belongs to a kind of lunar calendar, and an average calendar month is equal to a new moon. However, the leap month is set to make the average calendar year a tropic year, and the 24 solar terms are set to reflect the changing characteristics of the seasons (the annual movement of the direct point of the sun), so there is also a solar calendar. , is one of the traditional calendars in East Asia. The lunar calendar belongs to a kind of lunar calendar, and an average calendar month is equal to a new moon. However, the leap month is set to make the average calendar year a tropic year, and the 24 solar terms are set to reflect the changing characteristics of the seasons (the annual movement of the direct point of the sun), so there is also a solar calendar.