Let's just say you don't need to take care of the textbook. Even if it is the same, your children will definitely not be able to keep up with the education in Zhejiang when they come back from studying in Anhui. Zhejiang's textbooks are the deepest in the country. I remember that my former high school classmates were Manchu, and their grades were the lowest in our class. As a result, I returned to my hometown in Northeast China and took the exam twice. The first exam there was relatively simple, and the second one in Zhejiang was more in-depth. Besides, Zhejiang is an independent proposition, so the textbook is from Anhui. So for the sake of the children, it is better to send them back.