I told MM as a person in the book industry: You'd better do human resource management. Although the supplementary books in books are more profitable, with the strict management of the sales channels of teaching materials by the state, the sales channels of books mainly based on administrative apportionment will become narrower and narrower. Especially working in this kind of book company will be very hard and the development space is limited. Even if you are the editorial director, you work for the boss.
And tell MM: It's nice to enjoy the cool under the big tree. If you can enter a big company, don't give up.