Transmigrated into a minor official in a county government, with children at home waiting for rice t

The male protagonist had just transmigrated when he was hit on the back of the head with a stick and almost got dismissed after missing three days of duty.
His father disliked him for having two children to support, his eldest brother disliked him for being inflexible and unable to earn money, and his fourth brother feared that his position as a minor official would affect his reputation in the imperial examinations. The whole family wished they could kick him out of the house.
A family feud resulted in him gaining an old house for free, but also incurring a debt of gratitude.
He then discovered that there were more rats than people in the government office, and more turtles in shallow water.
A penniless and unconnected low-level clerk whose only trump card is his excellent handwriting and intelligence on various departments.
From a lowly clerk who was beaten up but dared not utter a sound, to someone who was called "Master Zhang" by everyone in the county, let's see how this minor county official makes a comeback!