The only advantage of a library teacher is stability and leisure. But the salary is slightly lower than that of teachers, and the development prospect is also slightly worse. If it's for stability, it's ok. If it's for development, it's not worth it. 1 is based on the special interests of female teachers. If she is good at library research and especially likes library work, or if she can be a curator, a leader, get a raise, have her wishes and pursue after going to the library, then go to the library.
If you don't like that place in the library and hate that place in the library, you can be promoted and made a fortune in the future, you can be a curator or you don't want to be an official, and your previous teaching results are very good, so you will be very happy when you step onto the platform. You should respect your inner voice and go to the podium. Students welcome you, and you can walk on it with peace of mind. You have a heavy peace of mind, and everything you want needs peace of mind.