Capacity building is a term widely used in relation to different organisations and public institutions for improvement. This chapter aims to discuss how RE can be better sustained through capacity building at the individual, institutional and societal levels by comparing the RE practices amongst a local university, the Education University of Hong Kong and some universities in United Kingdom, including the University of Manchester, University of Sheffield and the University of Cambridge. It is expected that a better understanding of the relationship between capacity building and RE advancement, including both its credits and limitations, can be achieved through this chapter. Suggestions for further strengthening RE in universities by capacity building in the three different levels will be recommended. Copyright © 2022 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.