1. Macao is a system of one country, two systems. On April 13th, 1987, the two prime ministers signed the Joint Statement of the Chinese People's Republic of China and the Portuguese Republic of China on Macao and two annexes in Beijing. The joint statement said that Macao (including Macao Peninsula, Taipa and Luhuan) is the territory of China, and the People's Republic of China will resume the exercise of sovereignty over Macao on December 2, 1999. China promised to implement one country, two systems to Macao, and guaranteed that Macao people could enjoy the right of "a high degree of autonomy and Macao people ruling Macao".

2. Macao is surrounded by the sea on three sides. Macao used to be an island at the southern tip of Zhongshan City (formerly known as Xiangshan County) in Guangdong Province, standing in the sea, no different from the contemporary offshore islands. Later, due to the sediment alluvial of Xijiang River, a sandbank (Lotus Stem, now Guanzha Road) was alluvial between Macao and the mainland, and it was connected with the mainland and became a peninsula. Macao's coastline is 937.5 kilometers long, forming South Bay, East Bay, Shallow Bay, North Bay, Lower Bay (above on the Macao Peninsula), Taipa Bay (Taipa Bay), Jiuao Bay, Zhuwan, Heishan Bay, Lai Chi Bay (above on the road ring) and many other places where ships can park.

3. Macao is a typical monsoon climate zone. Macao is adjacent to the Asian continent in the north and the tropical ocean South China Sea in the south. It is influenced by both the mid-high latitude atmospheric circulation from the mainland and the low latitude atmospheric circulation from the ocean, so the circulation transformation in winter and summer is obvious, and it is a typical monsoon climate zone. There are two times of direct sunlight in a year, with strong radiation and strong evaporation. It has the climate characteristics of abundant heat, sufficient water vapor, high temperature and rainy, which belongs to subtropical marine monsoon climate and also has the characteristics of tropical climate. The annual average temperature is about 22.3℃, and the annual temperature difference varies from 11℃ to 14℃. The annual average temperature in 27 was 23.2℃. It is wet and rainy in spring and summer, and the relative humidity is low and the rainfall is less in autumn and winter.

4. The official monetary unit of Macao is the Macao pataca. There are six kinds of Macao currency: 1 yuan, 2 yuan, 5 yuan, 1 yuan, 5 yuan and 1 yuan. There are six kinds of coins: dime, dime, dime, 1 yuan, 2 yuan and 5 yuan. There are two note-issuing banks: Atlantic Bank and China Bank. Macao does not have any foreign exchange control. Charges for goods sold and services provided in Macao are all calculated in Macao dollars, but Hong Kong dollars or other currencies can also be used. Up to now, the Macao currency is also called "Portuguese currency" by the locals.

5. The official languages of Macao are Chinese and Portuguese respectively. The official languages of Macao are Chinese and Portuguese. In Macau, Cantonese is spoken by 85.7% of the residents, Fujian dialect by 4%, Mandarin by 3.2%, other Chinese dialects by 2.7%, Portuguese by .6%, and English (1.5%), Tagalog (Philippines, 1.3%) and other languages by the rest (21). Macanese (Portuguese name is "Ba Du") is a Macao dialect which is a mixture of Portuguese, Malay, Cantonese, English, ancient Portuguese and a little Dutch, Spanish and Italian. It was once a common language used by Portuguese natives in Macao.