Macau is handed over to China by Portugal.

Macau or Macao is a special administrative region of the People's Republic of China (PRC). With a population of about 710,000 people and a land area of 32.9 km² (12.7 sq mi), it is the most densely populated region in the world.

The handover of Macau from the Portuguese Republic to the People's Republic of China was at midnight on 20 December 1999. This event ended 442 years of Portuguese rule in the former settlement, which began in 1557.

China, officially the People's Republic of China (PRC), is a country in East Asia. With a population exceeding 1.4 billion, it is the second-most populous country after India, representing 17.4% of the world population. China spans the equivalent of five time zones and borders fourteen countries by land across an area of nearly 9.6 million square kilometers (3,700,000 sq mi), making it the third-largest country by land area. The country is divided into 33 province-level divisions: 22 provinces, 5 autonomous regions, 4 municipalities, and 2 semi-autonomous special administrative regions. Beijing is the country's capital, while Shanghai is its most populous city by urban area and largest financial center.

Portugal, officially the Portuguese Republic, is a country on the Iberian Peninsula in Southwestern Europe. Featuring the westernmost point in continental Europe, Portugal borders Spain to its north and east, with which it shares the longest uninterrupted border in the European Union; to the south and the west is the North Atlantic Ocean; and to the west and southwest lie the Macaronesian archipelagos of the Azores and Madeira, which are the two autonomous regions of Portugal. Lisbon is the capital and largest city, followed by Porto, which is the only other metropolitan area.