A pillan is like a talking box that helps people understand each other when they speak different languages. When two people who speak different languages want to talk to each other, they can use the pillan to hear what the other person is saying in their own language. The pillan works by picking up the words that one person says, translating them into the other person's language, and then playing them back so that the other person can understand what was said. It's like having a magic friend who can understand anything you say and then tell your friend what you meant in a way that they can understand too!