What is a first-class constellation?

It means the brightest 34 constellations in the sky.

According to the inquiry of Chen Shi Feng Shui. Com, in astronomy, the first-order constellation consists of many bright constellations, the most famous of which are the Big Dipper, Gemini, Libra, Leo and Cygnus.

Most of the stars in the constellation are close, and you can clearly see the light in the night sky. Constellations are used to guide the direction and are closely related to myths and legends.

The above contents are for reference only, please don't be blindly superstitious.