The best university in the clothing field is Donghua University (formerly China Textile University).
But personally, design is not the strongest.
Other designs are good, such as Beijing Institute of Fashion, China Academy of Fine Arts, Wuhan Institute of Technology, Zhejiang Sci-Tech University, Dalian Institute of Light Industry, Tsinghua University Academy of Fine Arts.
The specific ranking is hard to say, because there are many differences between different ranking standards. The fashion designers association ranks professional colleges and universities, which seems to be based on the award-winning situation of the competition. Personally, it is not very reasonable, and it is for reference only.