What does this datapack do?│這個資料包在做甚麼？

In vanilla, black cats only spawn during the full moon, and other cat breeds also spawn during the full moon. With this datapack, the full moon only has black cats.│在原版中，黑貓只會在滿月生成，而且在滿月，其他品種的貓也會生成。有了這個資料包，滿月就只有黑貓了。