A child of 12 years old saw two snakes entangled together, and the old man said it would be bad luck. Is it true?/You don't say.

Maybe two snakes are fighting or mating. People didn't know any scientific knowledge before, so there were many strange explanations for many unexplained phenomena. You know, adults are so conceited that they don't want to admit their ignorance and fear, so they make up many legends and believe them firmly, so as to protect their face and comfort their ignorance and fear. You are lucky to be born in modern times. Read more books and don't pass on your ignorance to the next generation.