The reason why Yang Cheng uses cold white is because although ice can kill a lot of bacteria, it cannot completely kill it, and it is safer to boil it.

The level of medical skills in this world is very low, and ordinary wind and cold can kill people, not to mention intestinal infections.

Therefore, when he led the cooks to make tofu and braised pork that day, he emphasized: "No one is allowed to drink raw water, but must drink boiled water." ”

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Chapter 57 of "The Mandate of Heaven" knelt directly and was hit by his hand, please wait a moment,

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