Because most companies now have to train their own reserve cadres to make long-term considerations for the company's subsequent development, people under the age of 35 are freshmen who have just graduated for a few years. They not only have work experience, but also have certain cultural knowledge, which is the main goal of the company to train talents. If you are over 35 years old, first of all, although you have longer work experience, your learning ability will become dull with your age. The training energy paid by the company may not be as obvious as expected. Moreover, people over 35 must have their own career goals and circle of friends. If such people are given promotion opportunities, the grassroots of the company will be relatively unstable. Moreover, I personally think that a 35-year-old person who still needs a promotion opportunity is either too satisfied with his life and has no life goal, or a person who often changes jobs because of unstable work, so giving them a promotion opportunity will take some risks. There is also the company to train people under the age of 35. They already have experience in grass-roots work, and after training, they know how to think from the perspective of employees, so as to better lead employees to do a good job. Otherwise, it is impossible to do a good job without leadership and understanding the difficulty of grass-roots work. At the same time, training young people under the age of 35 can develop in our company for a long time, reduce the number of leadership changes, carry out work better, and the handover of various departments is more lasting and stable, reducing expenses for the company. At the same time, the basic marital status around the age of 35 is stable and in the rising period of development. It is also a group of people who need room for promotion. A stable family life can also make leaders' minds better devoted to their work and create greater profits for the company. However, if the trainees are too young, such as college graduates, there will also be potential risks, because they have just come into contact with society and are not sure whether they like this industry or not. So most of the company's training opportunities and promotion opportunities are reserved for people around 35 years old. Ensure that the interests of the company are maximized.