It embodies self-education. Teacher Wang Jinquan's case embodies the word "self-education". Self-education refers to the process that individuals use various resources, ways and methods in their life and work to independently acquire knowledge, skills and experience and improve their own quality and ability. Teacher Wang Jinquan is a migrant worker from Hunan. He had no higher education, but through his own efforts and self-study, he became a senior mechanical engineer.