The Legitimate Daughter’s Journal

In the Great Chu Dynasty, Lin Zhao, the Lin family's true-born daughter, was switched at birth and raised in the countryside. She is drawn into a battle within the household when her half-sister Lin Tang plots to poison their legitimate mother. At the critical moment, she awakens the ancestral jade case she has worn since childhood. It turns out to be a “scenario simulator” left behind by an interstellar civilization, capable of using her mental energy to simulate household-intrigue scenarios over the next 24 hours and accurately predict her opponents' next moves. Using the simulator, she first draws on what she learned as an herbalist to solve the mystery of her mother's poisoning, then turns the false evidence accusing Lin Tang of colluding with bandits into a proven case. She also unexpectedly discovers that the long-ago child-swapping plot is connected to the interstellar energy core her father has kept hidden. Along the way, she joins forces with Gu Yan, a noble heir who seems down on his luck but is actually descended from interstellar refugees. Together they foil schemes within the household and restore the memories of the civilization stored in the jade case. In the end, they expose the enemy-state spy network behind Lin Tang, reclaim Lin Zhao's rightful status with decisive flair, and fall for each other amid the collision of an ancient mansion and interstellar technology.