ABSTRACT Asia as Method, in decolonial thinking, endorses the value of local knowledge while concurrently recognizing colonial and global knowledges’ ongoing influence and potential value in knowledge production. The author takes such a decolonial approach to examine how actors interact in translating the Fine-tuning Medium of Instruction Policy in a Hong Kong school. To grasp the nuances of actor interaction, the Cantonese term mohap (wearing in) is employed. Three concepts from distinct traditions are used to explain mohap: meritocracy, harmony and agency. This study examines actors’ mohap process through three stages: How actors perceive the government guidelines, form the school-based policy, and develop the school-based policy. The findings show that actors’ mohap in the local context entails the meritocracy ideology, sought-after harmony, and actor agency. It reveals the need and the potential of localised approaches to educational policy studies in the Global South.