Why must there be detoxification herbs within a hundred steps of the place where poisonous snakes haunt?

This statement itself is incorrect, but it still has some truth. It's just an analogy, similar to everything in the Book of Changes. The theory that Yin He is not an only child has the same meaning, and there are things around everything that can limit it, which is what Chinese medicine says. So this sentence does not mean that there must be an antidote where poisonous snakes haunt.

China's geomantic omen (attention is geomantic omen, not superstition! There are also such examples. For example, although a certain direction is auspicious, people who are not suitable for living will become fierce. And the murderer can live in peace if he has the right person to live in.

To put it more popularly, it means the same as the scissors, stones and cloth I played when I was a child-scissors and cloth, Booker stone, stone and scissors.

As for many online novels, the protagonist said after poisoning that "where there are poisonous snakes, there must be an antidote within a hundred steps", which is the misinterpretation of those authors. Actually, think about it If the antidote can really be found within a hundred steps around the poisonous snake, why are so many people killed by the poisonous snake? There are also some explorers with rich experience in field survival!