Under the premise that the system is not completely perfect, secret accusations are sometimes a good way to expose crimes. And don’t worry too much about your personal safety being compromised. But this does not apply to universals after all. If society can only rely on this method to maintain order and fight crime, then this society will eventually lose trust between people. Everyone can't even trust their friends, try their best to avoid all potential misery, worry about the future, and can't enjoy the comfort and security brought by intimacy and sincerity. Life has thus fallen into a great panic, such as sitting on needles and walking on thin ice. From this, we can find that the system is the key to solving the problem rather than individual accusations.