Incredible art, clean and straightforward layout, and mwah to that header font! The goal of the adventure is unique but very clear, and the zodiac theming is great. Interacting with the speakers' personalities seems ripe for complex social challenges, which would be perfect for some groups and moods. The map shows a passage leading out of the Hen House. Is that an alternative entry point for the adventurers? Or is it meant as a potential point of respite?
I also love the ritualistic demands necessary before speaking into the horn. Worthy of a Celestial Emperor!