One: During the sending process, the major handlers (or due to personnel transfer) left behind and forgot. Two: Your file is in the hands of the relevant handlers, and it is not impossible to be fraudulently used. You can check the case of impersonating your student status online! Three: the speaker is unintentional, the listener is intentional, and you or your loved ones have offended others and been detained by the busybody to obtain economic benefits.
I'll give you a hint (though not the best policy). Until then, don't be afraid of being tired. Go to the school (in gentle words) to find the units, departments and relevant personnel who send files: Wuzhou tengxian Talent Exchange Center has gone through the file storage procedures, and the school sends files through confidential communication channels on this file delivery chain (including the school). Find a lawyer to ask which administrative units can be the object of administrative inaction, or even apply for compensation for your losses caused by overdue, or even choose to report the case.
Although your formalities are handled in Wuzhou, Nanning is the sender of archival materials, so you should sort them out from the source.
Whoo! Tired, it's time to rest. Good luck!