C230

Beiming Han ate the cold drink in the glass's bowl and asked: "Was this also taught to you by your Master?"

Yun Daimeng nodded his head: "En, although I do not know the theory, but I do know that once these stones melt into a liquid, they will be able to freeze water, so in the future, our Prince Mansion will not need to waste energy to store more ice cubes. With this method