Some people say that the Internet industry has not been promoted to management at the age of 35, which is almost equivalent to ruining his career. But a crueler fact is that at the age of 35, he was promoted to management, and even the special database middle-level of a large factory with a high status is still full of anxiety. Here is a definition of the middle-level of Dachang. Based on the opinions of many people in the industry, what we call the middle-level refers. To the head of the department who plays a considerable role in the company's internal core indicators and can be directly responsible for the results, similar to Dachang P8 , the person in charge of the P9 level, or the director of the operation, technology, product and other business lines of the large factory. Large factories are large in size and complex in special database structure. There are four or five levels between the top and the bottom. Direct dialogue is difficult and inefficient. In addition, the senior management of the big factory is responsible for formulating strategies, while the grassroots are mainly responsible for implementation. In the middle, people also need to split tasks, keep an eye on the progress, check for leaks, and make timely adjustments. At this time, the middle layer, as the link between the previous and the next, naturally arises. For the company, the middle level is special database very important, but it is not too irreplaceable. In the event of a business merger, half of the middle-level managers will have no place to stand. The company wants to significantly reduce costs, and the high-income middle-level managers are also the hardest hit by layoffs.