An autonomous city is like a special place where people make their own rules and decisions without needing someone else to tell them what to do. It's kinda like being the boss of your own house, but on a bigger scale.
Imagine you and your friends have a secret clubhouse. You made the rules for the clubhouse and you work together to keep it clean and safe. You don't need anyone else to tell you what to do because you are in charge.
In an autonomous city, people who live there work together to make decisions about things like schools, roads, and safety. They do this by forming a government, which is a group of people chosen to make important decisions.
The people in the autonomous city get to choose who the government leaders are by voting. Anyone who lives in the city has a say in who gets to be in charge. Once they have a government, they can make their own rules and make decisions about how things should be done.
Overall, an autonomous city is a place where people work together and get to decide their own rules and way of life without anyone else telling them what to do.