Han Xixi was sent to live and train martial arts on a mountain by her stepmother when she was little, knowing nothing about the ways of the modern world. Her master wanted her to return to civilization, so he made up a lie: marrying someone and sharing a bed with your spouse would boost her martial power.
Han Xixi naively believed "sharing a bed" simply meant sleeping side by side. After she came down the mountain and met the male lead, a string of hilarious mishaps unfolded. It was only then that she finally realized what it truly meant — and that it could lead to having a baby.
