The Peter Principle is a conclusion reached by the American scholar Lawrence Peter after studying the phenomena related to the promotion of people in organizations. In various organizations, employees are accustomed to the promotion and promotion of people who are qualified at a certain level in various organizations. Always tends to be promoted to its incompetent status. Peter's principle is sometimes called the "climbing up" principle. Which of the following phenomena fits Peter's principle? ["Professor Zhang's class is very popular, and he was recently promoted to principal, and he has been so busy since then.", 'As an excellent gymnast, he was hired as a coach by the National Gymnastics Team after his retirement, and his work was quickly recognized by everyone.', "Xiao Wang has been a company's marketer with good performance and was recently promoted to business executive.", 'Xiao Li was the general manager of the company and was quickly promoted to the management level. He worked very hard.']