"Slip in the Bathtub, the heroine actually slipped into her own street novel and became a county magistrate's concubine who was about to be sent to the palace as a maid. She wanted to live in peace, but she was forced to live in a cannibal harem. With the help of modern knowledge, he improved the accounting method, established a women's academy, and implemented the New Deal... He actually became a reform comrade with the number one scholar of the dynasty, and they developed a secret love while fighting the enemy side by side. But when they were about to change this decadent dynasty, they discovered that her time travel was no accident - the two worlds were collapsing, and she was the only "key" to save the world. Should she stay in ancient times and save the country with him, or should she return to modern times to make up for her debt to her mother? This love and salvation that spans time and space has just begun..."