Where can I find the geographical location and historical knowledge of Hong Kong and Macau?

1. Geographical location Hong Kong is located in southern China, the core area of ??the East Asia Economic Circle. Its geographical advantages are obvious: it borders the Pearl River Estuary to the north, the South China Sea to the south, and is located between Southeast Asia and mainland China. It is the economic center of the Asia-Pacific region. , trade and financial center. It is a special administrative region in southern China, located on the west bank of the Pearl River Estuary, adjacent to Zhuhai City, facing the South China Sea to the east, and facing Zhongshan City, Guangdong Province across the sea to the northwest. 2. Historical knowledge The history of Hong Kong can be traced back to the Neolithic Age, but in modern history, Hong Kong was ceded to Britain as a result of the Treaty of Nanjing between China and Britain in 1842 and became a British colony. In 1997, Hong Kong returned to China and became a special administrative region of the Republic of China. During the Ming Dynasty, it was a trade concession granted by the Chinese government to the Kingdom of Portugal. Subsequently, the homophonic discourse "" was formed in Portuguese and Chinese for communication. Later, it retained its colonial traditions for a long time, including its legal system. It returned to China in 1999 and became a special administrative region of China.