Against The Heavens, Wu Yingxiong

An upright, humble, and cautious individual who adheres to principles, strictly acts according to the law, never considers personal gains or losses, is passionate about their duties, works diligently and earnestly, is eager to learn, rigorously disciplines themselves, and upholds the idea of serving the people, unexpectedly finds themselves transformed into the eldest son of the great traitor Wu Sangui, Wu Yingxiong, after dying in the line of duty

Since I have discovered that I am Wu Yingxiong, what should be the first thing to do? Restore the Ming Dynasty and overthrow Kangxi? Or persuade my father, Wu Sangui, to accept the withdrawal of the fief and become a loyal subject of the Qing Dynasty?

None of that! The first thing to do—of course—is to check one's own body, to see if a certain key part is still there