Okay, imagine you want to go on a big adventure to visit different countries, but you need a special passport to do it. This passport is like a fancy book that has all your important information that lets other countries know who you are and where you come from.
In China, they have their own special passport that is called a "Chinese travel document". This passport is for Chinese citizens who need to travel abroad. It helps them go through different countries because it has important information like their name, picture, and other important details about them.
Think of it like a superhero ID that shows everyone who they are and what they can do. So if they want to go on a vacation to a different country, they need to bring their Chinese travel document with them. This way, they can prove who they are and that they have permission to travel.
Remember, it's important to keep your passport safe and not lose it because it's like a very special and important paper that you need to travel abroad!