Jiang Buwan was sent to the palace as a substitute by the Jiang family. He originally wanted to save enough money to run away, but at the gate of the cold palace, he bumped into the "faint king" Xiao Wenjing who had climbed over the wall in the middle of the night to borrow salt.
She set up a late-night snack stall, checked her deficit, and used her account books to fish out the salt tax case; he pretended to be weak and used her stall to win people's hearts. One treats the harem as a business place, and the other treats the world as a chess game.
When the false imperial edict, three thousand secret troops and the mother's old case surfaced at the same time, the whole court was waiting for the evil concubine to bring disaster to the country. Jiang Buwan put his abacus on the dragon case: "Your Majesty, first calculate who owes the world this debt."
The two powerful forces are plotting, Qingxi is fighting in the palace, and the emperors and concubines have gone from taking advantage of each other to breaking through the situation side by side.