Hong Kong and Macau is Special Administrative Region of the People's Republic of China. They are also called "One country, Two systems". Hong Kong is most largest export and import country. In calculation of export and import, Hong Kong's container harber is the most busiest harbor in the world and Hong Kong international airport is most crowded airport in the world.
Macau is the famous tourism city in China. They are legal gambling system. Many of Chinese people and Asian people, also all of the countries people like to go to Macao. Macao is very similar to Las Vegas which is the best tourism city in the world.