The relationship between acculturation and academic adjustment has been under-investigated. A mixed longitudinal design was used in this article, with study 1 employing a questionnaire survey (N = 642) to explore student sojourners' academic adjustment status and its predictors, and study 2 adopting qualitative approaches (reflective journal and interview) to track changes in acculturation strategies and adjustment experienced by a sample of 12 participants. Study 1 found that acculturation strategies (integration and marginalization) and social support (from family, Chinese friends, and teachers) were significantly associated with the academic adjustment of student sojourners in the Chinese higher education context. Integration was positively associated with academic adjustment, whereas marginalization was negatively associated. Study 2 revealed that student sojourners experienced changes in their acculturation strategies, students are suggested to embrace the integration strategy to sustain their academic journey in China. This study also provides implications for policymaking and education practices.