"Liushu" was a subject for elementary school study in ancient China. "Liushu" theory involves the research on the origin of the forms and structure of Chinese characters etc., which constitutes the teaching system for fundamental Chinese characters study. The significance of "Liushu" lies more in teaching practice than in theory. Based on the online questionnaire "Survey on Teaching Chinese Characters" responded by Teachers of Chinese to Speakers of Other Languages (TCSOL), the paper utilises the theories of "Liushu", summarises the methods and existing situation of characters teaching in International Chinese Education and explains the issues occurred during teaching. The ultimate goals are to seek suitable educational models for Chinese characters teaching and apply it to International Chinese Education.