After the war, Wang started to teach at Sun Yat-sen University in Guangdong in 1946 and founded the first Linguistics Department among Chinese universities. Wang himself designed the course syllabi and content for most of the courses. He integrated his research into teaching and used his own research as teaching materials. He believed that "students should not be taught through books bought by the teacher but through books written by the teacher". Many of his research works and notes were used as the textbooks and were directly sent to be published right after the courses ended.