To understand in-service language teachers' intrinsic barriers to technology integration in higher education contexts, this in-depth study investigated four teachers teaching Chinese as a foreign language (CFL) at a private university in Japan. The researcher trained the four teachers with varied digital literacy how to create and utilise online materials in a dedicated Moodle site, and the teachers' training processes, as well as actual classroom practices, were then observed. Qualitative and quantitative data were collected over three semesters, including: (1) a pilot survey before Moodle integration to access the teachers' attitudes and expectation of educational technology use; (2) classroom observations to investigate how the participants use technology in their CFL classroom; (3) audio recordings and field notes collected in a workshop and interviews to explore reasons behind behaviours; and (4) access logs in Moodle to determine the participants' engagement through online materials inside and outside the classroom. The findings' implications in terms of teachers' experiences, emotions, competences, beliefs, motivations, and sociocultural factors affecting their determinations of technology integration in CFL classrooms in a Japanese higher-education setting are presented. Future considerations and ongoing challenges are discussed to highlight the implications for research, policymakers, teacher educators, and stakeholders.