What does the star Beidou mean?

The Big Dipper refers to the Big Dipper or the Big Dipper. According to the modern international star naming system, the Big Dipper belongs to Ursa major. It is a group of stars near the North Pole in the northern night sky, shaped like a bucket spoon for scooping water. These seven stars are connected together in a certain order, just like the shape of a spoon. The first two stars in the spoon are called "pointing to the North Star", which can help us identify the direction at night.

The names of these seven bright stars are:

Shu Tian, Tian Xuan, Tianji, Tian Quan, Yuheng, Kaiyang and Yaoguang. The first four stars are called "Dou Kui" or "Xuan Ji"; The last three stars are called "bucket" and "bucket handle". These seven stars are α, β, γ, δ, ε, ζ, η in Ursa major, and the other six stars are all second-class except the celestial force δ. The line connecting Tian Xuan β and Shu Tian α is about five times longer, and Polaris can be found. Therefore, beta and alpha stars are also called "Polaris".