Polar Star belongs to the constellation Ursa Minor. Polaris is a bright star in the northern sky, very close to the North Celestial Pole, almost directly opposite the Earth's axis. Polaris is also called Beichen, Zi Gong, and Zi Wei Yuan. Zi is the name of Xuan, and the Purple Palace is also the Xuan Palace. The heroine in the palace is Yin Dexing, who is the Nine Heavenly Xuannv of Yanzi. Some people also believe that Haotian God resides in Beichen. "Haotian God is called the Emperor of Heaven and the Star of Beichen."
About 15,000 to 13,000 years ago, the North Star was due to the North Star. It was named Vega after Zhi's Weaver Girl, which originated from the ancient Han people's natural worship of ancient stars. Hence the name Polaris. Extended information
Different from the Western astronomical system centered on ecliptic coordinates, ancient China developed an astronomical system centered on equatorial coordinates. In this system, Polaris is located in the true north of the celestial sphere, which undoubtedly has a unique status. , often used as a symbol of the emperor in ancient China.
But Alpha Ursa Minor has not been the North Star since ancient times. Due to the periodic slow swing of the Earth's axis of rotation. Therefore, the position in the sky where the North Pole of the Earth's rotation axis points is also changing, and the "throne" of the North Star may also take turns.
Baidu Encyclopedia-Polaris