Zu Chongzhi became acquainted with the “Cyclotomic method” of Liu Hui， a mathematician of the Wei and Jin dynasties . The so-called “cyclotomic method” consisted in drawing a regular hexagon inside a circle， with the length of each side being exactly equal to the length of the radius of the circle. Then a regular dodecagon is drawn， using the Pythagoras'theorem to find the length of each side. Then the same method is used to draw a regular 24-sided figure， a regular 48-sided figure， and so on. Finally， the lengths of all the smallest sides are added up， to give the length of the circumference. 祖冲之接触到了魏晋数学家刘徽的“割圆术”。
《隐秘的角落》随着网剧《隐秘的角落》的热播，让法国数学家、哲学家笛卡尔重回大众视野，他的心形线也在剧情中抢尽风头。据悉，笛卡尔是 1649 年 10 月 4 日应克里斯蒂娜邀请才来到的瑞典，当时克里斯蒂娜已登基18年。
高中生一般都是15-18岁的年纪，正值情窦初开的花季雨季，这个年纪的学生对异性已经有了懵懵懂懂的好感，他们会用情书表达自己的好感，但因为这个阶段也是学习的重要时候，所以老师家长都会明令禁止谈恋爱，不过依然无法阻止学生那颗懵懂的心。
