Guo Shoujing (123 1 year-1316) is a native of Xingtai county, Shunde district, Han nationality. Famous astronomer, mathematician and expert in water conservancy engineering in Yuan Dynasty [1]. In his early years, he studied under Liu, Liu, Liu, Liu, Liu, Liu, Liu, Liu, Liu, Liu, Liu, Liu, Liu, Liu, Liu, Liu. Yuan Renzong extended his life for three years (13 16), and Guo Shoujing died at the age of 86. He is the author of fourteen kinds of astronomical calendar works, such as "Push Step" and "Licheng".
Guo Shoujing has made outstanding achievements in astronomy, calendar, water conservancy and mathematics. [2] From the 13th year of Zhiyuan (1276), he was ordered to revise the new calendar, which lasted for four years and worked out the "chronograph calendar", which was used for more than 360 years and became the most advanced calendar in the world at that time. In order to revise the calendar, Guo Shoujing also reformed and invented twelve new instruments, such as simple instrument and altimeter.
In the first year of Yuan Dynasty (1264), Guo Shoujing was ordered to repair and dredge the ancient Xixia Canal, set up sluices and weirs, and irrigate local farmland. In the 28th year of Yuan Dynasty (129 1), Guo Shoujing was appointed as the water superintendent of the capital, responsible for repairing the canal from Dadu to Tongzhou. It took a year to complete all the projects, named Tonghui River, and develop north-south transportation and water transportation.
1970, the international astronomical society named a crater on the moon "Guo Shoujing crater" after Guo Shoujing. [3] 1977 In March, the International Asteroid Center named asteroid 20 12 "Guo Shoujing Asteroid" [4].
Guo Wei
Guo Wei [1] (904-954), born in Yaoshan, Xingzhou (now Longyao, Hebei), was the founder of the last Zhou Dynasty in the Five Dynasties, and his reign was from 95/kloc-0 to 954. [1] Yin Di, who stayed in Yedu in the later Han Dynasty, was "tired of being bossed around by ministers" and sent people to Yedu to murder Guo Wei, which aroused the rebellion in Guo Wei. In the winter of 950, Guo Wei sent troops south, invaded Kaifeng and overthrew the later Han Dynasty. On February 3, 1995 1,1year, it acceded to the throne as Jianyuan, with the title of Zhou, which was known as Houzhou in history. He was thrifty by nature, able to speak well and get rid of the disadvantages, and gradually improved the economic and political situation in the northern region.