I am looking for the font that is used on the cover of the book in the image, does anyone know it? I am not even sure if such a font exists, it might be calligraphy but any answer is much appreciated.
This appears to be custom art. The cover art designer posted about their illustration on their blog:
I don't actually read Chinese (only Japanese), but it seems to suggest that the (Chinese) title of the book 活出時代的矛盾 that appears also as part of the English cover was a custom design based off the 方正姚体 font*. In this font, the title would look as follows (missing one character from the free preview):
* or a font with a similar name — they only say 姚體 (=姚体) in their post