When I was a child, my father raised more than a dozen monkeys at home. An old beggar passing by pointed at a monkey in horror, saying that this monkey had eaten people, and asked my father to let the monkey go quickly. After hearing this, my father was very angry and drove away the beggar. My mother suggested going to Grandpa Zhang's house to borrow an iron cage to lock the monkeys for a period of time. Unexpectedly, the day after the monkeys were released, Grandpa Zhang found himself at home strangely, and his grave was abandoned by unknown creatures.