Su Wanwan dressed up as the five-year-old prime minister's daughter. Just when she was about to lie down and wait to die, she was bound to the melon-eating system. The secrets of the court, the gossip of the harem, and the dark history of her father—she could eat it every day. The only "small problem" is: every conversation she has with the system is clearly heard by the entire government, the civil and military officials of the court, and even the emperor and queen. But no one can tell. So Prime Minister Su went to court every day holding his heart, the emperor broke his guard while criticizing the book, the little prince pretended nothing happened with red ears... And the instigator of all this, Su Wanwan, was eating watermelon with her short legs crossed, thinking: These ancient days are so pure.