Jiujin returned to Shushan due to the sudden death of his grandfather. When he was organizing a "hanging coffin burial", he discovered that the body had mutated and sprouted green scales. At the same time, "ghost head-shaving" incidents occurred frequently in the ancient city. During the investigation, Jiujin clashed with Lin Suyi, the person in charge of the ancient city reconstruction, but he salvaged a water-suppressing beast engraved with "Tiangang Thirty-six Points" from the well of the old house, and found the Bashu language with the same origin as Mai's physiognomy at its archaeological site. As weird events such as the Tang Dynasty Feng Shui puzzle in Zhongtian Tower and the ghost soldiers in the ghost market happened one after another, Zhao Laoyao revealed the secret of the "Three Treasures of Shuyuan" that Brother Pao would protect. The nine-pound compass resonated with Lin Suyi's bronze mask, leading to the legend of turtle spirits controlling water. Chen Sangu exploited and destroyed the "Four Symbols Bureau" to trigger the "Yin Soldiers". Jiu Jin discovered Du Fu's Feng Shui prophecy in Prince Teng's Pavilion, and pretended to be a "Yin Marriage" team with Lin Suyi to conduct an in-depth investigation. They uncovered General Kaiqiu's disguised puppet show troupe, the reverse flow of the Jialing River and other anomalies, and gradually pieced together the origins of the family and Yuan Tiangang. Finally, a Feng Shui array was launched at the Spring Festival Square to fight against Chen Sangu's "Faqiu Tianyin". The dragon's veins were redetermined by the Luoxiahong Star Observation Tower, Lin Suyi's life experience as an ancient Shu witch was revealed, and the millennium Feng Shui bureau was completed using the gongs and drums of grass cutters in northern Sichuan as a guide.
