The names of folders and files in the library are determined algorithmically, the fact that they are Anglo-ised and ASCII-ised is arbitrary.
See ==>>
Want to change folder structure or file names in the Calibre library?
Try creating a book with Title
披绿马甲、干黑勾当:伪环保假生态现象调查 and with Authors
励婕 and see what you get in the folder and file names.
BR