Postman Lao Chan Koi, who has been working for four years, delivers a mail in Macao, south China, December 5, 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 Kam Ka]

 

Pui va Middle School teacher Un Kam Sok, who has been working for 20 years, is seen at her office in Macao, south China, November 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]

 

Cheang Kit Long, a director of garden department at the Galaxy Hotel who has been working for two years, prunes plants at the hotel in Macao, south China, December 3, 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 Kam Ka]

 

Tang Kei Kuan, a staff member at the Macao International Airport who has been working for three years, is seen at the airport in Macao, south China, November 25, 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 Kam Ka]

 

Pui va Middle School teacher Un Kam Sok, who has been working for 20 years, is seen at a classroom in Macao, south China, November 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]

 

(Source: Xinhua)