Xu Heng's main deeds, Xu Heng's life and Xu Heng's brief introduction.

Alias: Xu, Mr. Lu Zhai

Ethnic group: Han nationality

Birthplace: Xiyangman Lane, Xinzheng County (now Xugang Village, Xindian Town)

Main achievements: The encyclopedic Confucian scholars and academic masters in Yuan Dynasty presided over the research and development of chronograph calendar.

Xu Heng was born in the third day of April (65438+May 8, 2009) in the first year of Jin Daan (two years and four years in Jiading, Song Ningzong), in Xiyang Slow Lane, Xinzheng County (now Xugang Village, Xindian Town). His ancestral home was in Qinbei Village, Hanoi County, Huaiqing Road (now Beilu Village, Qinyang City, Jiaozuo City, Henan Province). Later, Xu Heng's parents moved to Xinzheng to escape the war. Xu Heng's family has been farming for generations. Since childhood, they have been diligent and eager to learn. They are gifted and intelligent. When they entered school at the age of seven, they asked the teacher why they wanted to study. The teacher replied, "For the imperial examination." Xu Heng asked again, "Is that all?" The teacher was surprised. Every time he talks about a book in the future, Xu Heng will ask the truth, so that the teacher says to his parents, "Your son is clever, but I am incompetent. Please don't ask for a famous teacher. " Leave the museum. It's the same with three teachers in a row. When I grow up, I am more eager to learn. Because my family is poor and I have no money to buy books, I often run hundreds of miles to borrow books and copy them. He once saw a book explaining the Book of Changes in a fortune teller's house, so he copied it back and read it carefully. Later, he fled to Culai Mountain to get the Book of Changes annotated by Wang Bi. At that time, despite the war, Xu Heng still insisted on reading during the day, thinking at night and practicing. In the second year of Tianxing (1233), the Mongolian army arrived in Xinzheng County, and Xu Heng crossed the river from Luoyang and returned home via Heyang (now Mengxian County).

After that, Xu Heng went to Shandong and Wei successively, and returned to Huaiqing Road three years later. Later, he often traveled back and forth between Hehe and Luohe, and got the works of Cheng Yi, Cheng Hao and Zhu from Yao Shu in Liucheng, which benefited a lot. Later, he moved to Sumenshan near Huixian, and often discussed knowledge with Yao Shu and Dou Mo, involving many topics such as Confucian classics, children's history, rites and music, celebrities, ephemeris, military punishment, food, water conservancy and so on. Xu Heng once said: "A country of ethics cannot be abolished in one day. If the above people don't perform, we generally have to perform. " This is exactly what he did in real life. Xu Heng once went to Daming Mansion in Hebei Province to give lectures. Because of his disguised teaching, many people studied and wrote his Zhai as "Lu Zhai", from then on he was called "Mr. Lu Zhai". In the fourth year of Yuan Xianzong (1254), Kublai Khan was sealed in the middle of the Qin Dynasty, and Xu Heng was called to the school in Jingzhao. Xu Heng built schools in counties of Jingzhao. Kublai Khan went south, and Xu Heng returned to Huaiqing. The Jingzhao scholars could not stay, so they had to send him to Lintong.