Introduction
The deposed prince Chu Zhao was laughing maniacally under the dragon chair. The whole court thought he was crazy, but they didn't know that he was using his laughter as a blade to cut open the carrion of the imperial power. The female spy Pei Zhaoyue lurks in the palace for revenge, but becomes the only person he can entrust to his back; the old nanny guards the edict under the dragon chair, only waiting for the true owner of laughter; the chief assistant Yan Zhen works step by step, the prince Xie Jiuyuan struggles with loyalty and rebellion, and the palace maid Liu Yuan silently interprets his every crazy smile - when the laughter penetrates the court, under the dragon chair, it is not a cage, but the starting point of a prairie fire.