The Fourth Master's Beloved Concubine

"The 'miserable' truth tells us that time travel is a skilled craft. And clearly, Ye Zao's skills are just average. Being tricked by her cheap uncle into becoming a concubine in someone's mansion was bad enough, but why did it have to be in Fourth Prince's residence? And as a mere servant-concubine at that—how is she supposed to survive? The starting point is too low, her background too humble, her bargaining chips too few! The big BOSS has way too much HP, and the minor BOSSes are all deadly! After much deliberation, pretending to be virtuous would lead to death, because there's Lady Ulanara ahead. Acting shrewish would also mean death, because there's Consort Li behind. If she bears a son...