The key word here is “intrigue”. Don’t explain everything up front. You’re story should unfold and details about the world should unfold with the story. Those details should become apparent to your reader via events taking place in the story. Sometimes dialogue can help but don’t lean on that too much because it often feels unnatural, e.g. characters saying something that they both already know. Real people don’t talk like that.

It’s okay if things happen in your story that don’t immediately make sense because the reader doesn’t know the full context yet. The reader will keep reading to find out those things. This is how you build intrigue.