What is the moral of monkey's paw?

Can others borrow the monkey's hand to ward off evil spirits?

It is not allowed for others to use the hand of a monkey to ward off evil spirits. Monkeys' hands can't be used to ward off evil spirits at all. In fact, this is not to ward off evil spirits, but to encounter evil spirits. When we destroy the ecological environment to pieces, it is actually ourselves who suffer. At that time, let alone a monkey's paw, even the arrival of the gods could not save us, and we had already sent ourselves to the point of no return.