What is the origin of the dragon's rise on February 2?

The reason why the second day of the second lunar month is called Dragon Head Lifting Festival is actually related to the ancient astronomical phenomena. According to the orbit of the sun's five stars, the moon and the sky are divided into 28 days to represent the movement and position of the sun, the moon and the five stars.

The 28-day stay can be divided into four areas. The Oriental Black Dragon includes Jiao, Kang, Bian, Fang, Xin, Wei and Ji for seven nights.

The white tigers in the west are Wei Xiao, Lou, Wei, Chang, Bi, Gou and Shenqi.

South Suzaku includes seven nights, namely, well, ghost, willow, star, Zhang, wing,

North Xuanwu consists of seven parts: bucket, cow, female, virtual, dangerous, house and wall.

Among them, the "horn lodge" is the dragon horn. On the second day of February, the dragon horn star rises on the eastern horizon, so it is called the leading star.