Macau is a little place in China like a tiny island. A long long time ago, before we were born, it used to belong to Portugal. That means the people in charge of it were from a place called Portugal instead of China.
People first started living in Macau over 4,000 years ago, but it wasn't until about 500 years ago that the Portuguese came to Macau. They wanted to trade with the Chinese, and found that Macau was a good place to do it.
Macau became very important for trade between China and all of Europe. The Portuguese built buildings, churches, and schools which gave Macau an interesting mix of Chinese and European cultures.
After a long time, Portugal decided to give Macau back to China in 1999. But, they made an agreement with China that Macau would keep its own rules and regulations. This meant that Macau was still special and could keep some of its Portuguese traditions.
Nowadays, Macau is a big tourist attraction because it has lots of casinos and hotels. People from all over the world come to Macau to gamble and play games. The Portuguese history of Macau can still be seen in the buildings, food, and customs.