[pedrosorio]

Same for Macau:

"Shortly after Portugal's 1974 Carnation Revolution, which overthrew the Estado Novo dictatorship, the new government determined it would relinquish all its overseas possessions. In 1976, Lisbon redefined Macau as a "Chinese territory under Portuguese administration" and granted it a large measure of administrative, financial, and economic autonomy. Three years later, Portugal and China agreed to regard Macau as "a Chinese territory under (temporary) Portuguese administration".[17][45] The Chinese and Portuguese governments commenced negotiations on the question of Macau in June 1986. The two signed a Sino-Portuguese Joint Declaration the next year, making Macau a special administrative region (SAR) of China.[46] The Chinese government assumed formal sovereignty over Macau on 20 December 1999.[47]"

in https://en.wikipedia.org/wiki/Macau#History