President's Contractual Lover

She is 18 years old and has just graduated from high school. Except for her appearance and figure, she is very ordinary. He is the president of one of the top ten companies in the country, and everything related to him will become dazzling. Because her biological father was a gambler, he bought her to a rich man over fifty for eight million to be his mistress. The old man was willing to let him go, but asked her to pay back sixteen million. He and she were originally two parallel lines that would never intersect, but their fates were tightly intertwined because of a contract.