Guo Shoujing's creation in the early Yuan Dynasty? Jane? , "time calendar". Guo Shoujing was born in Xingtai, Hebei Province, and grew up with his grandfather. Guo Shoujing's grandfather Guo Rong was a prestigious scholar at that time. Under his education, Guo Shoujing has been familiar with the Five Classics since childhood, and his practical ability is extremely strong. At the age of 15 or 16, Guo Shoujing was able to make an armillary sphere with bamboo sticks according to the drawings in his hand. In addition, when he was young, he successfully mastered the operating principle of this timing instrument according to the rubbings of Lotus.

Guo Shoujing, who was already very talented, later studied Liu for a while. And this Liu Ye is a scholar who has a lot of research in the fields of Confucian classics and astronomy, so Guo Shoujing also gained a lot during his study. After Liu Yu 125 1 became Kublai Khan's counselor, Guo Shoujing went to study under the door through his introduction. Based on the teaching of these famous teachers, Guo Shoujing's ability has become more and more prominent. When Guo Shoujing was just an adult, Tuotuo and Liu Su hired him to take part in river cleaning and dredging in Xingtai. Guo Shoujing, on the other hand, finished this work well, so it was also written into the new stone bridge in Xingzhou, which was widely praised.

By 1260, Kublai Khan succeeded to the throne of Mongolia Khan, and Liu and Liu were further reused. As a student of both of them, Guo Shoujing was also summoned by Kublai Khan in 126 1 year, and then Guo Shoujing was appointed to cancel all the canals. 1264, Guo Shoujing was ordered to go to Xixia. After that, he began to repair and dredge the ancient canals in Xixia's hometown one by one, so the water conservancy situation was greatly improved and agriculture was developed at that time.

127 1 year, Great Mongolia ruled by Kublai Khan officially changed to the Yuan Dynasty, and then moved its capital to Duyi (that is, Beijing) in 1272. On 1276 after the establishment of the Yuan Dynasty, Guo Shoujing, together with Xu Heng and others, began to be ordered to revise the calendar. Guo Shoujing, who got the job, got it after many tests? The essence of the calendar lies in the examination. The instrument for the examination is not an instrument at first? Conclusion. Based on this conclusion, Guo Shoujing developed? Jane? . 1279, with the support of Guo Shoujing, a nationwide astronomical survey was carried out. Universal test? . At 1280, the new calendar that lasted for four years was finally drawn up, that is, the service calendar.

Compared with the early calendar, this calendar is much more complicated and the most advanced calendar in the world at that time. In the following period, Guo Shoujing also compiled books on astronomy for many times, including Push Step and Li Cheng.