Imagine you have a big playground, and you want to share it with your friends, but you also want to make your own rules. That's kind of what China does with its land.
China is divided up into big chunks, like provinces or states in the United States. But China also has some special areas called "autonomous administrative divisions."
"Autonomous" means that they have some independence and can make some of their own rules. "Administrative divisions" means that they are a group of places that are managed by one government.
These "autonomous administrative divisions" were created to give special recognition and rights to areas where minority groups live. Think of it like giving your friend who has a different color shirt some special privileges, so everyone is treated equally.
The people who live in these areas are allowed to follow some of their own traditions and customs while still being part of China. They also have some say in how their area is run.
So, in summary, China has some special places where people are allowed to have more control over their own land and traditions. These areas are called "autonomous administrative divisions" and were created to be fair to minority groups living there.