Negative numbers first appeared in the history of China and are generally used to calculate profit and loss. After all, there will be losses in doing business, so let nature take its course.

Compared with the smoothness of China people, foreign mathematicians are more persistent. They refused to accept the existence of negative numbers in various ways. It's like thinking that a number that is already zero cannot be subtracted from other numbers.

Their thoughts are limited to the superficial meaning of numbers, and they think that zero is the least, and if it is less, there is nothing. Even if someone calculates a negative number through an equation, they will stubbornly think that it is a pseudo number rather than a real number.

This idea has existed in Europe for more than two centuries. In a long time, countless mathematicians have been calculating and confirming, and negative numbers have finally been accepted and recognized.

In this respect, I have to admire the persistent spirit of European scientists, who constantly discover the concept of mathematics and strictly verify it, instead of leaving it to fate like us. Perhaps this is why negative numbers first appeared in our history, but they were carried forward in other people's history.