If Cao Cao had not killed Hua Tuo back then, but instead had him undergo a craniotomy - his head injury would have been cured, his IQ would have exploded, Guandu would have been an appetizer, and the fire in Chibi would have burned the Sun-Liu coalition.
From then on, the Three Kingdoms? Doesn't exist. Cao Cao spent half a century conquering the world, Hua Tuo used medicine to break the limit of lifespan, and steam engines, telegraphs, and warp engines were invented one after another. When the flag of Wei was planted in the Milky Way, the alien civilization discovered that this hero from the earth knew how to conquer better than they did.
Do you think he is just a good widow? Wrong. Every woman is his pawn, and even her sincerity is in his calculations.
When the earth could no longer accommodate his ambition, Cao Cao looked at the stars——
"The lonely world has just begun."