The size of the universe, the size of particles, the speed of rockets, the ingenuity of chemical engineering, the changes of the earth, the mystery of biology, the complexity of daily use, mathematics is everywhere. Mathematics and aerospace, mathematics and national defense security, mathematics and biomedicine; mathematics and information technology, mathematics and energy, mathematics and the ocean; mathematics and artificial intelligence, mathematics and advanced manufacturing, mathematics and the sea of ​​stars! If the 19th century is the mathematics century of the West, and the 20th century is the mathematics century of the color country, then the 21st century The ?century must be our mathematics century. We can firmly tell the world that we are back. Technology changes the world, and mathematics changes technology. Rather than saying that the competition between countries is the competition of scientific and technological strength, it is better to say that it is mathematics Competition for talents. In today's world, we will surely become a super country of mathematics and technology! This is a story from a controversial, tormented, and difficult rural problem solver to a chief academician.