After Recovering My Memory, Am I Actually the Fake Daughter?

[The female protagonist Su + Not stupid Bai Tian + There is a male protagonist + Relaxed and slightly funny + The female protagonist has no sincerity] Lin Chengsui has always been a powerful presence in the Lin family. Only when she was ten years old did she recall that she was a fake daughter who had traveled through time and occupied the magpie's nest. He was also involved in the turmoil of the times for various reasons. See how she lives happily in the harem. She doesn't want to be a dodder in the harem. What she wants is the position beneath one person!