He Guojin, male, graduated from Beijing Language and Culture University and obtained a PhD in Linguistics and Applied Linguistics from the Institute of Teaching Chinese as a International Language.He is now a professional course teacher in the Department of Chinese International Education, Tianjin University of Science and Technology.His main courses include modern Chinese lexicology, traditional Chinese etiquette and civilization, and pedagogy.His research interests include Chinese vocabulary, traditional etiquette and intangible cultural heritage.