The Alchemist's Urban Domination

After a decade of training in the mountains, he returns to the city, only to find his position in the Su family usurped, the family's power in jeopardy, and his fiancée declaring she would rather marry a pig or a dog than him.
"What is mine, I give only if I choose, not because you want to take it," he declares, mastering the art of alchemy and looking down on the entire city with cold arrogance.
Will he reclaim his rightful place and restore his family's honor?