What was the Lantern Festival called in ancient times

The Lantern Festival was also known as Shangyuan Festival, Xiaozhengmu, Yuanxi or Lantern Festival in ancient times, and it falls on the 15th day of the first month of the lunar calendar every year.

The first month of the new year, the ancients often called the "first month", also known as the night for the "night", the fifteenth day of the month for the night of the full moon, and the first fifteenth day of the first month of the new year is the first full-moon night, so it is called the "Lantern Festival". "Lantern Festival".