Abstract
This chapter starts with a basic definition of PBL that leads a review of a history of PBL. The review involves both a global view and a local view in China. It then describes how learning activity happens in PBL and introduces main characteristics of PBL. This motivates a theoretical reflection on why PBL works well in preparing qualified young generation for dealing with challenges of complexity in future professional practice. This chapter will close its discussion on why and how PBL should be considered as a good strategy in Chinese universities.