Macao has achieved great development under the "One Country, Two Systems" principle since it returned to China. Fu Ziying, chief of the Central Government's Liaison Office in Macao, said the Basic Law of Macao guarantees such development and the city has a promising future with close ties to the Chinese mainland.  

"Practice fully indicates the Basic Law is the solid legal guarantee for the economic development, improvement of people's livelihood and social stability of Macao," Fu told media outlets including China Global Television Network (CGTN). "It is also the anchor to maintain the national sovereignty, security and development interests of the region and ensure Macao's long-term prosperity and stability." 

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Actively integrating into the nation's overall picture of development is necessary for Macao to achieve greater development, he continued. 

"Macao will more actively assist the nation's efforts in opening-up, take part in national governance, and promote international people-to-people exchanges. It will play its unique role in promoting communication between the East and the West, mutual learning of civilizations and supporting the common aspirations of people," Fu noted. 

Macao's GDP surged from 51.9 billion patacas (6.44 billion U.S. dollars) in 1999 to 444.7 billion patacas in 2018. At the end of 2018, Macao's accumulated fiscal surplus reached 505.6 billion patacas, 193 times that of 1999. Local residents are fully employed and the unemployment rate dropped from 6.3 percent at the beginning of Macao's return to 1.8 percent in 2018.