In ancient times, New Year's Day was also called "Three-Yuan Festival". The so-called "ternary" refers to the yuan of time, the yuan of month and the yuan of year. In the year yuan, the year means the year and the year yuan means the first year. The month yuan means the first day of January, so this "three yuan" is the first day of the first month of the new year, which is 1 month 1 day in the solar calendar. The so-called New Year's Day is defined as 1 month 1 day in the solar calendar every year.

Speaking of New Year's Day, a closer look reveals that the solar calendar 1 month 1 day is not always New Year's Day in history. Historically, many days have been regarded as China's New Year.

During the period of Emperor Wu of the Han Dynasty, the first day of the first lunar month was once regarded as New Year's Day, which was also a very important day at that time and was celebrated by the whole country. In addition, historically, 1 October 1 day and1February1day have always been regarded as New Year's Day festivals.

1949 After the founding of People's Republic of China (PRC), the Gregorian calendar 1 month 1 day was established as New Year's Day. At that time, it was decided to take Gregorian calendar 1 month 1 day as New Year's Day.