This advertisement is based on the so-called "love story between Swedish princess Christine and mathematician Descartes". 1650 something happened on the street in Stockholm. 52-year-old Descartes met 18-year-old Swedish princess Christina Descartes. She is too poor to ask for charity. She just studies math problems with a broken pen and paper every day. One day, Christine's carriage passed by the street and found Descartes a princess studying mathematics, so she got off and asked. Finally Descartes found that the princess was very talented in mathematics, so he said goodbye. A few days later, Descartes was told that the king wanted him to be Princess Christina's math teacher. In the following years, Descartes, 34, fell in love with Christine. The king found and killed Descartes. In Descartes' last love letter to Christine, the mathematical coordinate equation of r=a( 1-sinθ) appeared, which was solved as a heart-shaped pattern, that is, the famous "heart line". This love letter was finally collected in the Descartes Museum in Europe.

But tell lz responsibly that this story is false, because Christine's father died when she was six years old, and it is impossible to appear again when she 18. Descartes lived a rich life all his life, how could he live on the streets; Even if you live on the street, no beggar will walk all the way to Sweden. Is the weather there a place where beggars can mix?

This story should be made up by some bosom friends magazines in China. I guess it happened to be seen by the advertising planner, so I took this chicken soup story as an advertising idea. They tried to pretend to be B, but they did, and finally they made a big joke.