Okay, so let's start with the word "Chinese". Have you ever heard of China? It's a really big country far away from here, and the people who live there are called Chinese. They have a different language, culture, and history than us.
Now, let's talk about "Brazilian". Have you heard of Brazil? It's a country too, but it's closer to us than China. People who live in Brazil are called Brazilians, and they speak Portuguese.
So, when we say "Chinese Brazilian", it means someone who has Chinese ancestry but was born and raised in Brazil. This can happen because a long time ago, many Chinese people moved to Brazil to work or start businesses. They brought their families with them, so their children and grandchildren ended up growing up in Brazil and becoming Brazilian citizens.
Chinese Brazilians still have some connection to their Chinese heritage, but they also have Brazilian customs and traditions that they follow. It's like having two different cultures in your family!