In fact, under normal circumstances, you shouldn't ask questions like "What's the major of XX in XX school?" Because each school has different emphases. It's like eating steamed buns in a steamed bun shop. Some steamed buns have good skins, some have good stuffing, and steamed buns are also divided into leeks, meat and cabbage. You can't ask "which steamed bread is delicious?"
What has changed about Donghua's materials major is that professors sometimes try to keep their research direction away from "fiber", perhaps to broaden their research fields or something. This behavior has led to two factions within the School of Materials Science. One faction, represented by the old professor, is more willing to adhere to the traditional path of fiber. One group is engaged in materials that have little to do with fibers, such as hydrogels. Of course, you can't say which side, because each side has its advantages and disadvantages.