Transmigrated to the Ming, Falsely Imprisoned from the Start: The Great Ming’s Black Armor

Opening: Shen Yuan transmigrates into a world where his family is being seized. His father is imprisoned on false charges. Using his modern first-aid knowledge, Shen Yuan saves a jailer's son and gets him to pass along a message, exposing flaws in the forged case files. Breaking the deadlock: Using a simple water-purification method recorded in The Exploitation of the Works of Nature, he curbs the spreading plague in Jinan Prefecture and attracts the attention of Shandong Governor Zhou Chen. Finding a foothold: He repairs a small dam destroyed by floods, using a "trapezoidal dam body + stone-filled bamboo cages" design that halves the cost of the original plan. He is appointed director of river works.