First, knowledge preparation: pay close attention to the last few days to see the real questions of civil servant interviews, and prepare for the interviews of public institutions with the standards of civil servant interviews. See the way to solve the real problem. Don't think these questions will appear in the interview questions, but at least look at these real questions to broaden your mind. Be sure to read more. When watching, you should simulate the interview scene and conduct self-presentation training. Even in the simulation process, you should smile and add appropriate body language to make your speech coherent.
One more thing, be sure to prepare your self-introduction in advance, try to be relevant to the position you are applying for and memorize it. In the face of questions such as "Why did you apply for this position" and "What advantages do you think you have in applying for this position", you can use this to change it.
Second, dress: conservative or formal, boys' suits, girls' professional suits, high heels (not too high), no more than three colors, black and white is the most stable.
3. During the interview: smile all the time, enter the door and close the door. Greetings: Good morning, examiners (as the case may be). I am a candidate. Don't say names. Then the examiner will say some interview instructions, and you nod. After the official timing of the interview begins, you will find a pen and paper next to it. After reading a topic, write down the main points of your solution, and don't fill them up like writing a composition. Don't stare at the paper when you answer. Look around the examiner. If an examiner stares at you, respond generously to his eyes. Avoid lengthy answers, grasp the main points, try to broaden your thinking and speak more, which will add points. Reminder: Never forget to smile. After the answer, add: "Finished", get up, "The examiner has worked hard" and leave with the door.
Summary: Be well prepared, believe in yourself, be dignified, smile, answer as many questions as possible and in a wide range, learn to look at questions from multiple angles and answer questions coherently. I wish you success!