A famous translator and educator in modern times, a representative of the New Legalist School. During his teaching in Beiyang Naval Academy founded by Li Hongzhang, he trained the first batch of naval talents in modern China, translated the theory of evolution, founded the National Newspaper, systematically introduced western democracy and science, publicized the idea of reform and reform, introduced western sociology, politics, political economy, philosophy and natural science to China, put forward the translation standard of "faithfulness and elegance", and produced later translation works. He translated the theory of evolution He used the social evolution theory of "natural selection" and "survival of the fittest" to provide a theoretical basis for national crisis consciousness and national consciousness. He was an influential bourgeois enlightenment thinker, translator and educator in the late Qing Dynasty, and one of the "advanced China people" who sought truth from western countries in China's modern history.