What are the characteristics of the national level and Macao in 2007?

One country, two systems. In 2007, the country combined the characteristics of China and Macau. China and Macau are located on the South China Sea coast, on the west bank of the Pearl River Estuary in Guangdong, 40 nautical miles away from China and Hong Kong, including China and Macau Peninsula, Taipa Island and Coloane Island. According to relevant information, one country, two systems, in 2007, the country combined the characteristics of China and Macau. China and Macau are located on the South China Sea coast, on the west bank of the Pearl River Estuary in Guangdong, and 40 nautical miles away from China and Hong Kong, including China Macau Peninsula, Taipa Island and Coloane Island.