After the victory of the Revolution of 1911, Sun Yat-sen became the interim president. Once, dressed in casual clothes, he went to the Senate to attend an important meeting. However, the guard on duty in front of the gate saw the visitor dressed simply, so he stopped him and shouted sharply, "There is an important meeting today, only the president and members of parliament can go in." What are you going to do as a bold person? " Let's go, let's go, or the president will be angry and will definitely punish you! "Hearing this, Sun Yat-sen couldn't help laughing and asking," How do you know that the president will be angry? " As he spoke, he showed his credentials. When the guard looked at the document, he realized that the man in ordinary clothes was actually the president. The guard was frightened, threw himself on the ground and repented repeatedly. Sun Yat-sen quickly helped the guard to get up and said humorously, "Don't be afraid, I won't hit you.