Professional education. General education is opposite to professional education, which focuses on the cultivation of professional talents; General education mainly focuses on non-professional education, aiming at cultivating students' extensive non-utilitarian basic knowledge, skills and attitudes that can actively participate in social life, have a sense of social responsibility and become all-round developed people. Relativity is an abstract word, which means that a substance or a whole is compared with another substance or another whole, or that its existence or change depends on certain conditions.