Rachapan, P., Lhapeerakul, P. and Siriwat, K. 2026. The Development of a Learning Model Using the PPP Technique Integrated with the “Fun Mystery Box” to Enhance Motivation in Learning Chinese Among Grade 4/5 Students at Chongfah Xinsheng Wanishbamrung School. Vacana Journal. 14, 1 (Jun. 2026), e140107.