The relationship between Guo Shoujing and the Observatory.

According to China Traditional Culture Network, the observatory was built by Guo Shoujing, an astronomer in Yuan Dynasty. With the support of Kublai Khan of Yuan Shizu, the construction of the observatory began in the 13th year of Yuan Dynasty and was completed in the 16th year of Yuan Dynasty. The Stellar Observatory is one of the oldest existing observatories in China and one of the oldest existing astronomical observation buildings in the world.

Its main function is to observe the movement of celestial bodies, make calendars, and at the same time, it is also used for divination and prediction of good and bad luck. The completion of the Observatory marks that the development of ancient astronomy in China has reached a new height, which has had a far-reaching impact on the development of ancient astronomy in China.