-Science and technology: As a basic theory in science, mathematics provides a unified language and reference framework for various fields.
-Economic field: Mathematics is widely used in economics, such as microeconomics, macroeconomics and finance.
-Engineering field: Mathematics is widely used in engineering fields, such as architectural design, mechanical design and electronic design.
-Information technology: Mathematics is also widely used in information technology, such as computer graphics, artificial intelligence, cryptography, etc.