ABSTRACT While extensive studies have been devoted to English-medium instruction (EMI) in the internationalisation of higher education, only a few studies have investigated the language-related experiences and perceptions of international students in non-Anglophone contexts where the local/national language(s) serve as a medium of instruction for academic purposes. Given that Chinese universities have adopted a strong Chinese-medium instruction (CMI) initiative for international students in the past decade, this article makes a critical analysis of interviews with 48 African students to uncover CMI implementation in Chinese universities. The findings reveal that the students generally held positive attitudes towards the top-down CMI policy being implemented, despite the challenges encountered. However, the uncritical curriculum ‘Sinicisation’ also raised concerns about Chinese-only practices, the absence of appropriate learning materials and testing regimes, a lack of institutional support for using Chinese as an academic lingua franca, epistemic and social marginalisation of international students. As such, the article presents a complex interplay of language attitudes, language practices and identity construction in CMI programs, highlighting a hiatus between policy intentions and actual practices in classrooms. I conclude the article with recommendations for policymakers and future research on CMI policies and practices in China.