Ruling the World, Starting as a Live-In Son-in-Law

Mo Yang transmigrates to an ancient world called the Great Feng Dynasty, only to be forced by his stepmother from the start to marry into another family in place of her son.

And the bride is the daughter of a disgraced official whose family has been confiscated and exiled.

You want me to die in your son's place!

Mo Yang immediately cuts ties with them and uses his modern knowledge to rise to prominence.

Cement, gunpowder, steel, cannons...

When he reaches the pinnacle of his age, his stepmother and half-brother begin to regret their choices, coming to his door one after another to beg for his forgiveness.