十三世纪的南宋金元时代,此时中国南方是“直把杭州作汴州”的偏安的小朝庭,而北方则是面临着元军高压、岌岌可危。然而,在历史的长河中,这个阶段却正是中国古代数学史上的黄金时代,在很多方面,中国学者的工作在世界上都处于遥遥领先的地位。这个黄金时代为什么会嘎然而止? In the thirteenth century, the Jin and Jin dynasties were in the Southern Song Dynasty, when the south of China was a small court of partial peace that “kept Hangzhou as a state of Zhuozhou” while the north was facing the high pressure of the Yuan army and was in jeopardy. However, in the long history of the river, this stage is precisely the golden age in the history of ancient Chinese mathematics. In many aspects, the work of Chinese scholars is far ahead in the world. Why did this golden era come to an end?