After Being Transformed into Cannon Fodder, I Defeated the Boss by Lying Down

Xia Lan slipped into an ancient sadistic novel and became a cannon fodder daughter who climbed onto the bed to gain a position. The original protagonist was madly in love with the male protagonist, but ended up being left out, abused, and died in childbirth. After passing through the book, Xia Lan looked at Lin Yang, the unmarried prince of the God of War who would dominate the world in the future, and his eyes lit up - where is this Mr. Leng? It is clearly a walking "financial freedom" backer!