i m pakistani national and permanent resident in japan,my gf works in china. how to get chinese visa

hi
i visited my gf(non-chinese) who is working in china few times last year.but since the start of this year they changed the rule.i cant apply for tourist L.what to do?
i live and work in japan. how can i visit her for this new year coming holidays since she s china cause chinese dont have new year holiday unless its chinese new year.
whats the best possible way to visit her.
thank you