What does twenty-eight nights mean?

This astrological fortune-telling method originated from the tantric astrology in Buddhism, which was introduced to China from India. India changed China's 28 stars to 27 stars, and put Taurus (Taurus) into female hostels (female native bats). Maybe Indians observe the stars from different positions and angles. There must be a difference between China people who look at the sky from a distance in the Yellow River valley and Indians who look at the stars at low latitudes. The brightness of the stars in the sky is also different in two places. This makes China have 28 stars, while Indian has only 27.

So this 28-star fortune-telling method is actually a 27-star fortune-telling method.

Twenty-eight constellations, also known as the Twenty-eight Palace or the Twenty-eight Stars, were the ancient times when China divided the celestial sphere near the ecliptic and the celestial equator into twenty-eight regions. According to the position of 28 stars, it is divided into four elephants: Qinglong, Suzaku, White Tiger and Xuanwu.

Seven hostages of Oriental Qinglong: Jiao Mujiao, Kang Jinlong, Nyctereute Fang Ri Rabbit, Heart Moon, Fox Tail, Fire Tiger and Water Leopard.

Seven nights in Xuanwu, North China: unicorn, golden bull, female earth bat, virtual sun mouse, fierce moon, swallowing the water on the wall of the house fire pig.

The White Tiger in the West in the Seven Nights: the Golden Dog, the Stomach Soil, the Pheasant and the Bigou Fire Monkey.

Seven Nights of Suzaku in South China: Muan Jing Ghost Golden Sheep, Six Rabbits, Zhang Yuelu, Winged Fire Snake and Water Worm.