Introduction to mathematicians Other contents https://www.youtube.com/watch?v=_PKKUr51hxA • 數學 五位數學家 Chinese Level 9
Introducing Liu Hui Other contents https://www.youtube.com/watch?v=zHrYASMSbyk&list=PLdGGUAWhykRmn5KXLxp_xYl7xhFVzWmHD&index=16 • 數學 劉徽 Chinese Level 9