evidence: Macau is a special administrative region (SAR) of the People's Republic of China. It was leased to Portugal in 1557 as a trading post in exchange for a symbolic annual rent of 500 tael. Despite remaining under Chinese sovereignty and authority, the Portuguese came to consider and administer Macau as a de facto colony. Following the signing of the Treaty of Nanking between China and Britain in 1842, and the signing of treaties between China and foreign powers during the 1860s, establishing the benefit of "the most favoured nation" for them, the Portuguese attempted to conclude a similar treaty in 1862, but the Chinese refused, owing to a misunderstanding over the sovereignty of Macau. In 1887 the Portuguese finally managed to secure an agreement from China that Macau was Portuguese territory.[1] In 1999 it was handed over to China. Macau was the last extant European territory in continental Asia. [...] Historical records show that Macao has been Chinese territory since long ago. When Qinshihuang (the first emperor of the Qin dynasty) unified China in 221 BC, Macao came under the jurisdiction of Panyu County, Nanhai Prefecture. Administratively, it was part of Dongguan Prefecture in the Jin dynasty (AD 266–420), then Nanhai County during the Sui dynasty (AD 581–618), and Dongguan County in the Tang dynasty (AD 618–907). In 1152, during the Southern Song dynasty, the Guangdong administration joined the coastal areas of Nanhai, Panyu, Xinhui and Dongguan Counties to establish Xiangshan County, thus bringing Macao under its jurisdiction.