During the Qianlong period, Jinmen salt merchant Shen Moxuan suddenly encountered a strange investigation. On the Yanyin, "three, six, nine" turned out to be a secret signal. In order to break the deadlock, he ventured into danger alone and sneaked into the shady story of salt politics, but he uncovered a shocking conspiracy that swept the government and the opposition. The battle for salt and profit is really a chess game; leading to mysteries is nothing more than bait. When the fisherman turns into a fish in a pond, he only has one chance, using his heart as bait, to fish out a glimmer of life in the torrent of power, desire and silver, and also to fish out the heart of the empire hidden deep under the Nine Layers Palace.
