Human trafficking is when bad people trick or force others to leave their homes and take them to different places where they are treated very badly.
In China, this is something that happens a lot, especially to girls and women. Sometimes people promise that they will provide them with jobs or help them move to another country, but when they get there, they are treated as slaves and forced to work for very little money.
It is very hard for these people to escape because they are watched very closely and are not allowed to leave. Even if they do manage to escape, they often do not have any money or anywhere to go, so they are stuck in a strange place all alone.
This is a very bad thing, and we need to make sure that it does not continue to happen. It's important that we all work together to stop human traffickers and protect those who have already been victims of this terrible crime.