Okay, so imagine you have a special secret place in your bedroom where you keep all your favorite toys. You call it your shadow kingdom.
The shadow kingdom is kind of like that but for grown ups and countries. It's a secret territory that belongs to a bigger country but they don't really control it or pay much attention to it. It's like a hidden world within a world.
Sometimes these shadow kingdoms can be created because the bigger country is too busy with other things to take care of them. Other times, they might not even know the shadow kingdom exists because it's so well hidden.
In the real world, some examples of shadow kingdoms might be small islands or territories that a bigger country owns but doesn't really pay much attention to. These places might have their own unique cultures, languages, and laws that are different from the main country.
So, basically, the shadow kingdom is a secret place that belongs to a bigger country but is kind of left to do its own thing. It's like having your own secret hideout where you can do whatever you want.