Macao is one of the two Special Administrative Regions of the People’s Republic of China. It was rented to Portugal as a trading port in 1557, but remained under Chinese authority and sovereignty. In 1887, Macao became a colony of the Portuguese Empire when the Qing Dynasty and Portugal signed the Sino-Portuguese Treaty of Peking.
On December 20, 1999, Macao finally returned to the motherland China. Under the “One Country, Two Systems” policy, Macao still enjoys a high degree of autonomy in matters including legal system, police force, monetary system, customs policy, and immigration policy.