1. The anniversary of Yang Gong's death refers to the day when people mourn Yang Yan, a famous figure in the Kaiyuan period of the Tang Dynasty, in Tomb-Sweeping Day on the third day of the third lunar month every year.
2. Yang Yan was a famous politician, writer and calligrapher in Tang Dynasty. He was a prime minister and made great contributions to the political, cultural and economic development of the Tang Dynasty.
3. During Yang Yan's reign, he advocated Confucianism, ritual and music culture, promoted the reform of the imperial examination system, and promoted social stability and progress. Since Yang Yan's death, people have paid homage to him in Tomb-Sweeping Day every year to show their memory and respect.
4. Yang Yan was evaluated as an enlightened politician with thoughts, courage and foresight in history, and played an important role in the political, cultural and economic construction of the Tang Dynasty.
Introduction of leap month:
1, leap February refers to an extra month in an ordinary year due to a leap year, that is, after the normal February, plus a February.
2. The length of leap February is the same as that of ordinary February, generally 29 days, and it will only increase to 30 days in some special years. The appearance of leap month is to correct the time difference between the lunar calendar and the solar calendar, so that the lunar calendar can reflect the seasonal changes more accurately.
3. In the traditional lunar calendar of China, there are 12 months every year. Because the moon's cycle around the earth is about 29.5 days, the total number of days in a year is about 354 days, which is nearly 1 1 day less than that in the tropical sun. So every few years, we have to add another month to adjust. This month is a leap month.
In the traditional culture of China, leap month has many mysterious symbolic meanings. In the traditional culture of China, leap month is usually used to calculate and celebrate important festivals of the lunar calendar.