C1784 Heliotrope
Fortunately, the trash can decompose debris, but the speed is very slow. After all, these debris can withstand the sunlight, and they can't burn debris with fire. They only rely on the decomposition ability of the trash, if they don't have the ability to decompose, then it would be really hard to refine these debris.
However, every ruler of the universe had the ability to break down debris