RUI, H. and PETCHARATIP, K. 2026. A A COMPARATIVE STUDY ON TASK DESIGN AND VOCABULARY SELECTION IN THE ELEMENTARY BUSINESS CHINESE TEXTBOOKS EXCEL IN CHINESE-BETTER CHINESE-BETTER LIFE (I & II) AND NEW SILK ROAD: ELEMENTARY RAPID BUSINESS CHINESE (I & II) BASED ON THE BCT(A) SYLLABUS. Chinese Language and Culture Journal. 12, 2 (Jan. 2026), 137–154.