In the sixth year of Taihe reign of Emperor Wenzong of the Tang Dynasty, in the gentle countryside of Pingkangfang, Chang'an, an unlisted intelligence black market - Qingyun Pavilion - lurked. Three years ago, Lu Chenzhou, the son of a criminal whose father and brother died tragically in prison due to the "water transport leakage case", recommended himself as the new steward of Qingyun Pavilion in order to find out the truth. During the day, he works as a maid for dignitaries, and at night, he records the most shady secret transactions in Chang'an City with a secret account book.
When he first arrived, he was involved in a bizarre murder case: Tobe Tojiro died suddenly on the embroidery bed of the oiran Yuerao, and his body actually contained half of the top-secret "Policy for Reducing Domain Money and Food" in his arms. The other half that was supposed to be on the record pointed to clues about the Lu family's unjust case back then. What's even more bizarre is that within three hours of the murder, Qingyun Pavilion received three secret letters one after another: one from the current princess Li Jinghong, who was willing to exchange royal secrets for protection; one from Xue Lengyan, a female official in the Yeting Bureau, claiming to have evidence of the poisoning of the maidservant; the last one was unsigned and only had a bloody jade scratch on it - the symbol of the imperial concubine involved in the case three years ago.
Lu Chenzhou suddenly realized that what he had stepped into was not the Fengliu Cave, but the center of the spider web connecting the court, the feudal town, and the harem. And in the seemingly ordinary "Flower Appreciation Record" in my hand, under every page of pink comments, there is a code to rewrite the fate of the empire...
