My family is my foundation. Everything I am is because of them.
The history of mathematics is a testament to the ingenuity and creativity of the human mind.
The first erroneous assumption is that quality means goodness, or luxury, or shininess, or weight.
所以,储备是国家最重要的事;粮食是国家的宝物;武器是国家的利爪;城池是守卫国家的屏障。