It is Kangxi. Kangxi studied mathematics under the guidance of Belgian missionaries. However, it is not easy to listen to his lecture, and talking back to the equation is a lengthy answer, so Kangxi suggested translating the unknown into "yuan" and the solution of "sub" equation into "root". Several academic terms created by Kangxi have been used to this day!

Kangxi also initiated the Chinese translation of equation terms such as "Yuan", "Secondary" and "Root". When ferdinand verbiest, a Belgian missionary, explained the equation to Kangxi, some terms were unclear because of his limited proficiency in Chinese and Manchu.

Kangxi also initiated the Chinese translation of equation terms such as "Yuan", "Secondary" and "Root". When ferdinand verbiest, a Belgian missionary, explained the equation to Kangxi, some terms were unclear because of his limited proficiency in Chinese and Manchu.

Kangxi explained it for a long time, and suggested that the unknown be translated into "yuan" and the highest number into "times", so that the values of the unknown with equal left and right sides of the equation can be translated into "root" or "solution". Ferdinand verbiest indecision to stare at kangxi, leng for a while.

Suddenly, I hugged Kangxi in accordance with the most cordial etiquette in the west and said excitedly, "I have been studying and teaching for decades, and neither teachers nor students have seen anyone who is willing to think like you!" These equations created by Kangxi are simple, accurate and scientific, and are very easy to understand and remember.