During the Chongning period of the Northern Song Dynasty, there was a "painting doctor" business in Bianliang, Tokyo, which specialized in repairing damaged ancient paintings. After the male protagonist was expelled from the Hanlin Academy of Painting, he discovered a forgery of a famous painting from the previous dynasty, the Landscape of Mountains and Rivers, which involved a shocking secret between the reformists and the old party fighting for the mercury to control the Yellow River.
