Yun Xi, the master of Yunxi Valley, is an expert in medicine and poisoning, and has unparalleled martial arts skills. He is entangled in love and hate with his old enemy, and has an only son, Yun Sheng. In his thirty-seventh year, he met Qin Nanxi, a five-year-old orphan girl, by chance at Hanguang Temple. He accepted her as his direct disciple and brought her back to the valley to educate her with ten-year-old Yun Sheng.
Porridge called Yun Sheng his brother since he was a child. The two practiced martial arts and medicine together. They were together day and night, and they had the same mind. After growing up, the two were equally good at martial arts and each had their own strengths - Yun Sheng was the best at poisoning, while Nan Xi's medical skills were benevolent and helped the world.
On the eve of Yunxi's fiftieth year, she and her eldest son Yun Sheng decided to make an exception and pass the title of Master of Yunxi Valley to Qin Nanxi, who was only eighteen years old.
