Consort Mo Becomes the CEO's Substitute Lover

After graduating from college, Xia Mo loses her footing and falls off a cliff while traveling. Her soul transmigrates to ancient times, and she is bound to a Romance System. Candidates to win over: The cult leader, the general, the prince, and the emperor. With four choices, she goes and picks the emperor, the most difficult target of all, then enters the palace to compete with a crowd of women for his favor. After years of hard work, she finally rises to become Consort Mo, just one step away from the empress's throne. All she has to do is wait for the emperor's childhood sweetheart, the frail empress, to kick the bucket so she can take her place. But the damned emperor dies first. With the mission incomplete, the System takes her back to the modern world and places her inside a book. Her role is still the male lead's substitute lover, whose job is to prevent him and the female lead from getting back together. The male lead is still pining for his white moonlight. The day she returns home after completing her studies, he'll dump Xia Mo. Theme: The cannon-fodder female character's comeback