The ninth prince Xiao Heng, whose mother and concubine died young, has no support in the court and lives in a broken house with old things. The prince regarded him as a chess piece, the second prince regarded him as nothing, and the fourth prince regarded him as trash. When the civil and military officials of the Manchu Dynasty mentioned him, there was only one word: useless. Until the battle to seize the heir begins, the prince falls, the second prince is deposed, and the fourth prince goes crazy. Only then did everyone realize that the most inconspicuous Ninth Prince had sat beside the dragon chair at some unknown time. "Your Highness, you hid it too deeply." "Hide it? I'm just waiting for you to finish the fight so that it can end."