The "North" and "South" hit by the Big Dipper refer to the king of the Big Dipper and the star king of the Southern Dipper.
Because the Star Classic says: "There are six stars in the south, and the life of the Lord is also the Lord." After the popular saying that Nandou is the master of life and Beidou is the master of death, Taoism absorbed Nandou and deified the six stars, becoming the six-star king in charge of life and longevity. "Shangqing Jing" cloud: Nandou six stars, the first Tianfu Palace, is the star of Siming; The next day, "xianggong" was Lu Xing's secretary; On the third day, Liang Gong was the King of Life-prolonging Stars; On the fourth day, for the benefit of the star king, the same palace; Fifth, Shu Tiangong is the proper star king; On the sixth day, the Tiangong was named Shang Sheng Xing Jun, collectively known as Liu Si Xing Jun. The temple dedicated to Nandou Xing Jun is called Nandou Xing Jun Temple. Because Nandou is good at survival, it is also called "life extension teacher" by the people.
Taoism calls the Big Dipper the Seven-Yuan Xie Hexing King, who lives in the Seven Palaces of the Big Dipper, namely: Shutiangong Wolf-Greedy Star King, Tian Xuan Palace Giant Gate Star King, Tianji Palace Lucun Star King, Tianquan Palace Wenqu Star King, Yuheng Palace Lian Zhen Star King, Kaiyang Palace Wuqu Star King, and Eta Ursa Palace Broken Army Star King.
At the same time, some Taoist books also say that according to the time of birth, a person's life is divided into seven star kings: "greedy wolves are too star kings, and children are born;" The giant gate is a distant king, and the ugly returnee is a stranger; Road inch is a real star, and strangers belong to it; Wenqu Xinxing Jun, born by strangers; Lian Zhen Port promotes the army, and Shengsheng Chen belongs to it; Wu Quji is no stranger and belongs to Wu Shengren. " Everyone can find their own star according to their birthday.
So there is no bad meaning in either.
The Big Dipper is Ursa major, in the northern sky. So we can see them every night.
The six stars in Nandou are in Sagittarius, which is a constellation on the ecliptic, so we can't see it every night.
The simplest way to judge is to look at the number of stars, not to mention 1 6, 1 7.
Then look at the location. Find the location of the ecliptic first. If it is on or near the ecliptic, it is the southern bucket of six stars. The Big Dipper is definitely not on the ecliptic.
It can also be judged by the season time.
There was the Big Dipper in ancient times, so are there seven stars in the south, east and west? What is their relationship with 28 stars?
Astronomers in ancient China divided the stars visible in the sky into twenty-eight groups, called twenty-eight nights, which were divided into seven nights. The seven nights in the Oriental Black Dragon are horn, sound, fork (dο), room, heart, tail and dustpan; The seven nights in Xuanwu in the north are fighting, cattle, women, air, danger, houses and walls; The seven residences of Xibaihu are Kui, Lou, Wei, Chang (O), Bi, tapir (zē) and Shen (Shē n); South Suzaku's seven nights are well, ghost, willow, star, Zhang, wing and Zhu (zhěn). India, Persia and Arabia also had similar sayings in ancient times.
Twenty-eight stars, also known as the Twenty-eight Palace or Twenty-eight Stars, divide the stars in the southern transit into twenty-eight groups, and the circle of stars distributed along the ecliptic or the celestial equator (the equator of the earth extends to the sky) is divided into four groups, also known as four elephants, four beasts, four-dimensional and four-dimensional gods, and each group has seven stars. Its origin is still not completely clear.
At first, the ancients chose 28 stars to compare the movements of the sun, the moon, gold, wood, water, fire and earth as observation marks. The meaning of "lodge" is similar to the "palace" of the zodiac, which means constellation. Represents the position of the sun, the moon and five stars. In the Tang Dynasty, Twenty-eight Hostels became the main body of the twenty-eight celestial bodies, and these celestial bodies were still named after Twenty-eight Hostels. Different from Sanyuan, as a celestial body, Twenty-eight Hostels are mainly used to divide the ownership of star officials.
The 28 huts start from Kakuk and are arranged from west to east, in the same direction as the sun and the moon:
The East is called Qinglong: Jiao Mujiao Kang Jinlong Nyctereute Fang Ri Rabbit Heart Moon Fox Tail Fire Tiger Basket Water Leopard;
In the south, Suzaku is called: Muan Jing Ghost Golden Sheep, Liu Tu, Xingri Horse, Zhang Yuelu, Winged Fire Snake, Water Worm;
In the west, it is called the White Tiger: the Golden Dog of the Tiger Wood Wolf Tower, the Stomach Soil, the Pheasant, and Alnilam, the fire monkey of Bi Wu Yue Gou;
Xuanwu north said: unicorn, golden bull, female earth bat, virtual sun rat, fierce moon swallowing room fire, pig wall water.
(Tortoise and snake are called Xuanwu)
According to Dai's Night Boat, the water on the wall should be on the dog's side, and the sound on the right is rain.