Why are they called Haishan II and Betelgeuse? Why do you give these stars such strange names?

This is a naming method of ancient China stargazers based on "Twenty-eight Stars". This is completely different from the Greek alphabet symbols used in the All-Day 88 constellation.

Twenty-eight nights, also known as "twenty-eight homes" or "twenty-eight stars". In ancient China, in order to observe the astronomical phenomena and the movements of the five stars of the sun, the moon and the moon, 28 star officials were selected as observation signs, which were called "Twenty-eight Hostels". Divided into four groups on average, each group has seven nights, with four directions of east, west, north and south and animal images such as Qinglong, white tiger, Suzaku and Xuanwu (collectively called tortoise and snake), which are called "four elephants" in Taoism. The concept of four elephants and twenty-eight lodgings was formed very early, and it was recorded at the beginning of the Warring States Period. Later, in the Book of Rites Quli, it was said: "Before the trip, Zhu bird followed Xuanwu, left Qinglong and right White Tiger." Confucius said, "Zhu Bird, Xuanwu, Qinglong and Baihu are also named after these four places." In the Han Dynasty, the book Shang Shu Kao Ling Yao said: "Twenty-eight nights are the vitality of the sky and the essence of everything. Therefore, the Oriental Corner, Kang, Bian, Fu, Heart, Tail and Basket are seven nights, and their shape is like a dragon, which is called Zuo Qinglong. Nanjing, Ghost, Willow, Star, Zhang, Wing and Bird stayed for seven nights, which looked like quail birds and were called' former Suzaku'. In the west, there are Wei Xiao, Lou, Wei, Chang, Bi, Gou and Shen for seven nights, which are shaped like tigers and called' right white tigers'. In the north, fighting, cattle, women, air, danger, houses and walls stay for seven nights, shaped like turtles and snakes, called' post-Xuanwu'.

There are records of 28 stars in early summer. Every star is made up of several stars, and some names appear in The Book of Songs and Historical Records. According to the position of 28 stars, it is divided into seven nights of Qinglong, seven nights of Suzaku, seven nights of Baihu and seven nights of Xuanwu. The specific names are as follows:

Seven nights in Qinglong: Jiao Mujiao Kang Jinlong Nyctereute Fang Ri Rabbit Heart Moon Fox Tail Fire Tiger Basket Water Leopard

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

White tigers in the seven nights: the golden dog, the stomach soil, the pheasant and the Bigou fire monkey.

Seven nights in Xuanwu: unicorn, ox, Taurus, female soil, bat, virtual sun mouse, dangerous moon, swallowing room fire, pig wall water.

Every night is made up of different numbers of stars, some of which include ten to dozens of stars, such as Su Kui and Su Rong. Some constellations consist of only two or three stars, such as arcturus and Heart. In ancient times, the Han people used imaginary lines to connect the stars that make up every night, thus forming various shapes of graphics.