The protagonist is a famous general named Li Feiying (male, 18, from the Central Plains), the other protagonist is a famous prostitute named Qiao Ling'er (female, 18, from the Central Plains), so he is called Qiao Ling'er, and the other protagonist is Li Feiying's father named Li Feidao. When he was young, everyone called him Little Li Feidao, a leading figure in the martial arts. In an ordinary family life, Li Feiying is very naughty, so he wants to go out and make a career in the world, but he doesn't know that the world is dangerous. However, his good looks are one of his key points, but the other thing is that he hides his secrets and does not use his family's martial arts - Xiao Li Flying Knife - as a last resort.