Extradition law in China is a rule that says if a person has committed a crime in one country and then escapes to China, the authorities in China must return that person to the other country where the crime was committed so that they can be tried and possibly punished.
Think of it like this: if you and your friend are playing hide and seek, and your friend cheats by leaving your backyard and going into your neighbor’s yard without permission, your neighbor can tell your friend that they have to come back to your yard because they don’t belong in their yard. This is a bit like how countries can tell China that someone who committed a crime in their country has to go back there to face the consequences.
China has its own extradition law, which explains how it decides whether or not to send a person back to the other country where they committed a crime. Sometimes it might not send someone back if the person might be unfairly punished or if they could face the death penalty. But other times, it might send someone back if the evidence against them is strong and there is a good chance they committed the crime.
Overall, extradition law is a way for countries to work together to make sure that justice is served and that people can’t just run away from their problems by going to another country.