Thank you for your answers. Because of the written interview along the way, of course, I am afraid that if the medical examination is cancelled. I was a little nervous, and I didn't want to be nervous, but I couldn't help it. If I can apply for color Doppler echocardiography during the re-examination, I will have no psychological pressure. If I still ask for an ECG, I will definitely be nervous. Tension exists objectively, regardless of people's will.