Transmigration: I Rule the Harem Through Sign-Ins

[Sign-In] [Feel-Good] [Strong Female Lead] Yun Lin wakes up to find she has transmigrated into the body of a concubine confined to the Cold Palace, and is automatically bound to a System for conquering the imperial harem. During her two years in the Cold Palace, she supports a whole group of confined concubines through sign-ins, living a comfortable, carefree life.

Two years later, she hears that the original body's younger sister is about to enter the palace as a concubine. Naturally, Yun Lin has to leave and teach the original body's maternal family a lesson.

Only after leaving the Cold Palace does Yun Lin realize that things are not as simple as she had imagined. Even with the System, there is Fang Shuyi's distrust, the Empress's suspicion, the Emperor's suggestive glances, and her maternal family constantly reminding her to regain favor. Yun Lin misses her sisters in the Cold Palace and the days she spent there. Why not let them all out and work together to create a better atmosphere in the imperial harem?

But why does Su Guiyi's younger brother keep clinging to her?