Modern corporate slave Lin Du transmigrates into Zhang Sanlang, the lowest-ranking clerk in the county yamen. At the very start, he is disowned and swept out of the house by his biological father, moving into a dilapidated ancestral home with a pair of children. Does having connections in the imperial court make things easy? No, he relies on the arithmetic skills of his past and present lives to make a splash in the household department. From being framed in a false case of a severed finger to exposing malpractice in farmland property, facing the relentless pressure of the punishment department clerk, he uses a single ledger to shake up the entire Juan City officialdom. Breaking away from family ties and seizing farmland, outwitting wealthy gentry, and solving murder cases with clever schemes! Watch how a tiny clerk turns a bad hand into a winning royal flush, cutting a bloody path through officialdom in ancient times!