The dynastic cycle is like a story that tells us about how a family comes to power and then loses power to another family.
Imagine you and your friends are playing a game where one person is the king or queen, and they get to make all the rules. They start off being fair and nice, but over time they might become selfish and mean. This happens because they get used to having all the power and they forget about the needs of their people.
As they become meaner, the people start to get upset and they might rebel against the king or queen. Sometimes the rebel group will win and the old king or queen will be kicked out of power.
Then a new family will take over and be the new king or queen. They will start off being nice and fair too, but eventually, they will become selfish and mean just like the old one.
This process keeps repeating over and over again, with different families taking turns ruling and eventually losing power. It's like a never-ending cycle where the same story keeps happening again and again.