The Acadèmia Valenciana de la Llengua is a special group of people who work to study and protect the Valencian language. These people are like superheroes for the language! They make sure that the language stays healthy and strong, so that people can keep speaking it for many years to come. They study things like the history of the language, how it's used today, and how it's different from other languages. They also make special rules and guidelines for how to write and say things in Valencian. It's kind of like how you have rules for games you play with your friends or how you have rules for how you behave at home or at school. The Acadèmia Valenciana de la Llengua is like a really important teacher for the Valencian language, and they're working hard to help everyone who speaks it!