So imagine you have two big groups of people who live in a place called Britain. One of the groups is called the Welsh and the other is called the English. Even though they all live in the same place, they have different ways of doing things and different languages that they speak.
Sometimes they get along really well and share things like food and music. But other times, they have disagreements and don't get along as well.
A long time ago, the English people took over a lot of the Welsh people's land and made them live under English rule. This made the Welsh people very unhappy because they wanted to be in charge of their own land and make their own rules.
Nowadays, the Welsh and the English have their own separate governments and laws, but they still have some shared history and traditions. The Welsh language has been making a comeback in recent years and is now recognized as an official language in Wales. People from both groups still celebrate some of the same holidays and have some similar customs, like eating fish and chips or watching soccer games.
Overall, the relationship between the Welsh and the English has had its ups and downs, but they still have some things in common and are neighbors who have to find a way to get along.