Ballad of Sword and Wine, book 2 Tang Jiu Qing

KNOW THINE ENEMY
After a passionate night together, Shen Zechuan and Xiao Chiye part the next morning as enemies. A new emperor has ascended the throne, and the court is in flux. Power and position are in reach for anyone who dares to grasp them—and Shen Zechuan will stop at nothing to pursue his ambitions. But while Shen Zechuan and Xiao Chiye counter each other’s moves on the board, grander schemes are afoot in the capital of Qudu.
As court conspiracies swirl around them, Shen Zechuan and Xiao Chiye find themselves unlikely allies against a mysterious adversary pulling the strings behind a series of calamities targeting the emperor. Yet, in order to work together, there must be trust, and with trust comes risk: in setting their masks aside, they may inadvertently find their whole selves laid bare.

Titre original : Qiang Jin Jiu, book 2