City Lord System: I Built an Invincible Sacred City!

[Fantasy premise + System + power progression + wish fulfillment + multiple female leads] Qin Yang transmigrated from Blue Star into another world before birth. At twenty, he awakened the City Lord System. The System was bound to Shengjing, an ancient capital of seven dynasties. At the time, the city was in utter chaos, reduced to a den of crime. By earning the people's faith, Qin Yang can strengthen all kinds of structures in the city, including houses, roads, and city walls. The stronger the city becomes, the stronger Qin Yang becomes. Watch as Qin Yang gradually transforms Shengjing into an unrivaled sacred city for the ages. I'm terrible at writing blurbs, so just give it a try. This novel has multiple female leads, but the protagonist isn't promiscuous. If that's a dealbreaker, proceed with caution.