Byzantine Greeks were some people who lived a very long time ago in a place called Byzantium. This city was very important and powerful, like a big castle with lots of people living inside it. The Byzantine Greeks were one group of people who lived in this castle.
The Byzantine Greeks were very good at many things like art, language, and writing. They even invented new ways of writing that we still use today. They also made many beautiful buildings and artworks that we can see and admire even now.
On the other hand, the Byzantine Greeks were not always very nice to other people who were not like them. They sometimes fought with people from other places who wanted to take over their city, and this made them very suspicious of strangers. They also did not always treat their own people fairly, especially if they were not part of the rich and powerful families.
Overall, the Byzantine Greeks were a group of people who were very clever and creative, but at the same time, they could also be mean to other people and did not always treat everyone fairly.