Breaking Off the Engagement? I'll Invest in the Future Empress!

Jiang Ci transmigrates into a fantasy world and becomes the top genius of a powerful clan. He awakens a golden finger System called Investment Returns. When an elder orders him to break off his engagement, he suddenly awakens memories of his past life, just as his fiancée is unexpectedly crippled and reduced to a useless person. The broken-engagement trope, followed by a useless person's rise to power? Isn't that the perfect protagonist template? And so... Just as everyone expects Jiang Ci to break off the engagement, and future Empress Ye Lingyuan is about to say, “Thirty years east of the river, thirty years west of the river,” he does something that leaves everyone dumbfounded. [Host invested in the future Empress. Reward: cultivation increase] [Host invested in a fox spirit girl. Reward: improved comprehension] Looking back from the pinnacle of the Dao, Jiang Ci realizes something. He's not the villain, so why are all these chosen protagonists following his lead?