Tian Yifang claimed to be the illegitimate son of the shogun, causing a sensation. Master Fengxing was reluctant to believe it at first, but he had to accept it in the face of evidence. During the interrogation, Tian Yifang's sincere answer became the key to his being judged as a counterfeit. Although Master Fengxing knew that this move might sacrifice Tianyifang, he still made the decision to execute him for the sake of the stability of the world. After that, Master Fengxing fell into distress and his face became gloomy and depressed... The novel shows Master Fengxing's struggle between duty and humanity, as well as the thoughts caused by the fate of Tianyifang, leaving suspense about right and wrong.