The root of the matter is still with you. Even though you know that he is a talkative woman, you still tell him the secret. How secrets get out is because there are so many people keeping secrets. A told B to keep it a secret. B thought it was interesting, so he told C and told him to keep it a secret. C thought this matter was very important and more people should be able to protect the secret, so he went to tell Ding again. Ding also believes that good things should be shared with friends. As a result, under the urging of confidentiality, more secret keepers were quickly developed like a pyramid scheme. Although everyone fulfilled their duty to keep secret, everyone also knew what should be kept secret. Therefore, things that need to be kept secret can only be kept secret by oneself. As long as the second person knows, the secret cannot be kept.