Macao, formerly known as Haojing 'ao, has been handed down from generation to generation for hundreds of years, forming many place names, mainly including Macao, Xiangshan 'ao, Haojing, Haojiang, Jinghai, Majiao and Macau Street. Hao Jing, originally an oyster mirror, is the real name of Macau. Its name is because there are circular bays on the east and west sides of the Macao Peninsula. After repeated reclamation, the coastline gradually becomes straight.

On a calm moonlit night, the sea water is silvery and smooth as a mirror, just like the inner wall of an oyster shell. Macao and its vicinity are rich in oysters. In Cantonese, they are called oysters, and the inner wall of their shells is smooth and bright as a mirror, which is why Macao is named.

Qu Dajun, one of the three outstanding figures in Lingnan at the end of Ming Dynasty and the beginning of Qing Dynasty, wrote in his "Guangdong New Talk" that the oyster mirror faces the southeast of Xiangshan 120, and there are two bays, north and south, surrounded by seawater. Later, because oysters were vulgar, they changed the oyster mirror to A Hao mirror. In the book "A Brief Introduction to Macao" published during the reign of Qing Qianlong, it is said that there are two bays in the north and south, five or six miles in the east and west, or the South Ring Road. Erwan gauge is as round as a mirror, so it is called Hao mirror.

Since Macau Beibu Gulf is just a river, the nickname of Haojiang comes from Haojiang. There are also aliases such as Haijing, Jinghai and Jinghu, which are also evolved from Haojing. Macao is called Macao because it looks like a door in the mirror of Haocheng, hence its name. Macau has always been the territory of China, which was originally under the jurisdiction of Xiangshan County.

In the 14th year of Jiajing in the Ming Dynasty (1535), the Portuguese bribed local officials in Guangdong and obtained the right to dock ships and trade in Macao. In the thirty-second year of Jiajing 1553, he went ashore to live on the grounds of drying and flooding goods. After the First Opium War, the Portuguese took the opportunity to expand the territory occupied in Macao.

185 1 and 1864, taipa island and coloane island were successively occupied. 1887 Portugal coerced the Qing government into signing the Draft Convention of the Sino-Portuguese Conference and the Sino-Portuguese Beijing Treaty, which stipulated that the Portuguese state would be permanently stationed in Macao, and the place belonging to Macao was no different from other places under Portuguese administration. Since then, Portugal has occupied Macao and included it in the Portuguese territory.

Sino-Portuguese Joint Statement on Macao: The China government will resume the exercise of sovereignty over Macao on February 20th. 1993 On March 3 1, the China government promulgated the Basic Law of the Macao Special Administrative Region of the People's Republic of China, stipulating that the Macao Special Administrative Region shall be directly under the Central People's Government and enjoy a high degree of autonomy except for foreign affairs and national defense.

Including executive power, legislative power, independent judicial power and final adjudication power, the Macao Special Administrative Region will not implement the socialist system and policies, and will maintain its original capitalist system and way of life for 50 years.