The orphan girl Xin Wuyou was picked up by the "Jiu Xian" Ling Ruchen in the ruined temple and brought back to the Jiu Xian Valley. Since then, she has been studying under the teacher and has become proficient in wine making, poetry and calligraphy, and the art of recognizing people. When she was sixteen years old, she lost the stability of her years in the valley, disguised herself as a man and wandered around the world, from the entanglement of love in Yicheng, to the mysterious cases in the secret room in Yuncheng, from the mystery of calligraphy and painting in Suzhou, to the treacherous trade routes in Guangcheng, to the suspicion of poison in the mountain city and the theft of weapons in the west city, solving mysteries along the way, and witnessing the various emotions of people along the way. She carries a pot of peach blossom wine and relies on her pair of penetrating eyes to distinguish good from evil, solve puzzles, and uphold morality among the lights of swords and the fireworks in the market. And Ling Ruchen, who is both a teacher and a father, has always been with her silently. Not only is she her backing, but she is also unraveling the knots of her past that have been sealed for many years during her journey. From Jiu Xian Valley to the capital, from being alone to being surrounded by relatives and friends, Xin Wuyou used wisdom as a blade and kindness as a shield, and blazed his own "worry-free" path in the interweaving of rivers, lakes and courts.