The traditional lunar calendar in China belongs to the lunar calendar. What activities were mainly used to guide in ancient times?

Guide agricultural production activities.

The lunar calendar is also called summer calendar, lunar calendar, old calendar, middle calendar and lunar calendar. Because of the use of Xia Zheng, it was often called Li Xia in the old society. After 1970, Li Xia was renamed as Lunar Calendar. The lunar calendar is a combination of yin and yang, and the years are divided into flat years and leap years. An average year is twelve months; A leap year is thirteen months. A month is divided into a big month and a small month, with 30 days in the big month and 29 days in the small month, and its average calendar month is equal to the full moon.

Calendar is a rule to measure a long time interval, judge climate change and predict the arrival of seasons according to the natural laws of astronomical changes. According to calendar year, calendar year and calendar month, it is divided into ephemeris, solar calendar, lunar calendar and yin-yang calendar. There are four general calendars: the lunar calendar (monthly calendar), the solar calendar (solar calendar), the ephemeris (Beidou calendar) and the combined calendar of yin and yang.

The calendar with the moon as the basic unit is the lunar calendar, the calendar with the solar year as the basic unit is the solar calendar, and the calendar with the rotation of the Big Dipper as the basic unit is the ephemeris.

In the lunar calendar, its basic calendar rules have been gradually improved and formed by generations, and its form has continued to this day. Lunar calendar is a kind of calendar formed by integrating solar calendar elements on the basis of summer calendar (lunar calendar). The lunar calendar is usually mistakenly called the lunar calendar among the people, but it actually belongs to the yin-yang calendar.