Macao makes great strides in economic development since return to motherland

Pui va Middle School teacher Un Kam Sok, who has been working for 20 years, is seen at her office in Macao, south China, Nov. 26, 2019. Since its return to the motherland 20 years ago, Macao has made great strides in economic development and achieved prosperity and stability. (Xinhua/Cheong Kim Ka)