Who are the four heavenly kings?

Constellation: Antares, a disciple of the 14th North of Xuanyuan, and Bi Suwu were called "Four Heavenly Kings" by the ancients.

Antares: On the back of Scorpio, there is a bright star next to the Milky Way, which is Antares. It is also called "fire" because it looks bright red. Antares is larger than the sun, and its radius is much larger than the distance from the sun to Mars. Antares has a green companion star with a magnitude of 5. Modern research shows that Antares constantly throws out a lot of substances and forms an air shell around its companion star. On the radio,

Xuanyuan XIV: Under the sickle-shaped star of Leo, there is a bright white star, which is equivalent to the heart of a lion. It's Xuanyuan XIV. Although it is the 2nd1bright star in the whole day, it is the king of spring stars in the spring starry sky without bright stars. We can find this Xuanyuan XIV by extending the connecting line between the two polar stars in Ursa major to the opposite direction of Polaris. Xuanyuan XIV is located on the ecliptic. Sometimes we can see the moon or the sun.

Beiluoshimen: Extending from the right side of Pegasus quadrangle to the south for about 2 times, you can find an orange lonely and cold bright star, which is Beiluoshimen. Located at the fish head of Pisces, it is called "fish mouth" in Arabic. Beiluo Shimen is the ancient name of China. It is the southernmost bright star we have ever seen except the southernmost region of China. For a long time, navigators often use it to navigate.

Bi Su Wu: In winter, there are three stars on Orion's belt in a line, turning to the northwest sky and coming to Taurus. Taurus has a bright red star, BiSuWu. It is the 13 bright star in the whole day and one of the "Four Kings Stars" near the ecliptic (the other three stars are Antares, Beiluoshimen and Xuanyuan XIV). It is a red superstar, which indicates that middle age is coming to an end and old age is coming. It is much bigger than the sun and hundreds of times brighter.