Princess Huanzhu was a classic wuxia novel about the little swallow and the crape myrtle. Little Swallow was a curious and adventurous girl. She was good at learning and imitating, and often used some strange idioms to deal with enemies. In the novel, the little swallow learned the idiom "not knowing whether to laugh or cry" in a battle. She used this idiom to describe her current situation, which meant that she was very embarrassed and could not describe her predicament. It made people laugh and cry. The plot was designed to be very interesting. It showed the little swallow's intelligence and her sense of humor. At the same time, it also reflected the common plot in martial arts novels, where the protagonist learned a new skill in battle and then used it to deal with the enemy to increase his strength.