This level of promotion, although it seems like a significant ascent for County Magistrate Zheng, actually depends merely on a single word from Vice Minister Zhang.
Because the Vice Minister of Personnel primarily oversees the performance evaluations of ordinary officials, while the Assistant Minister practically makes the final decision on promotions.
As for the Minister, matters of this level must be presented to the Heavenly Official for approval, which is no minor ordeal.
Of course, even after approval is granted, it still has to go through the procedures at the Heavenly Official's office.
But it's just a formality.
Generally speaking, once the Little Heavenly Official decides on something, unless it involves significant interests, the Heavenly Official tends to turn a blind eye.
After all, he is the recognized successor of the Minister of Personnel.
After you leave office, your people still have to watch his expressions.