In Hong Kong, the issue of teaching Chinese as a second language (CSL) to school children is receiving considerable attention in recent years due to the trending proportion of CSL students in classrooms. While the Hong Kong Government encourages the integration of these students into mainstream schools in which the medium of instruction is predominately Chinese, the inadequate support provided puts these school aged children in a disadvantaged position. In light of this, there is a need of developing effectual interventional strategies to support the CSL learning of these students at preschool, primary and secondary levels. This chapter introduces a new support mode, the Dynamic Enrichment Learning Mode (DELM), which has been specifically developed for an intervention programme for promoting CSL students’ proficiency in Hong Kong kindergartens. Pre-test and post-test data were collected from 146 CSL kindergarteners aged 4 to 5 years who received DELM activities (DELM group) and compared to that of 110 CSL kindergarteners of the same age group who learned Chinese by merely learning in an immersion setting (immersion group). Findings show that the DELM is more effective in promoting CSL kindergarteners’ overall Chinese proficiency levels when compared to an immersion setting. Copyright © 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.