A Poor Student Used up My Sunscreen, so I Called the Police Decisively

Father: I Will Go to the Cold Palace to Steal the Imperial Sister.

The emperor fell off the throne in shock: Where did you get the imperial sister? "Grandma Huang, there are three identical imperial sisters in the cold palace. Which one should you steal?" The empress dowager said in surprise: Three? Take Aijia to see it quickly. Asking for book title