No system, no special abilities, only using modern common sense as a sword to break the deadlock of ancient poor families.
From a dying orphan to a civilian chief minister, he managed his way step by step in the hierarchical Ming dynasty without relying on chance encounters or divine power. He only relied on basic common sense such as hygiene, agriculture, arithmetic, and management.
Watch how the protagonist uses boiling water to resist the plague, uses double-entry accounting to crush subordinate officials, uses logical essays to impress the imperial examination, and finally reaches the top of power with practical achievements.