Valuable Resource

Exploration Stage: Post Office
From: Mr. Black
Description: I came up with the Law of Black when I saw the citizens carrying the Collector's anti-fog crystals to their homes and ruining them by inserting them into unsuitable appliances. Like that kerosene lamp over there - pass it, I'll show you.
Completed: If you place an anti-fog crystal in this kerosene lamp, it'll quickly fail. The use of such a valuable resource had to be controlled!