The Dayong Dynasty was in turmoil, the imperial power was declining, and the Xiao family, a relative of the family, was covering the sky with one hand. Shen Qingyan, the most inconspicuous daughter-in-law of the Zhenbei Hou Mansion, awakened the memory of the historian in her previous life since she was a child. She possesses the [Mountain and River Census] and is familiar with the secrets of the rise and fall of the past century. The family regards her as a pawn and wants to offer her up for marriage with the domineering prince. Shen Qingyan is meek and conceding on the surface, but secretly controls the pulse of the situation, and works step by step in the undercurrent of house fighting. A sudden man-made disaster quietly pushed the turning point of fate before our eyes. She hid her edge for more than ten years, just waiting for an opportunity to escape from the chess game. Mountains and rivers are about to collapse, but only those who play chess can achieve a glimmer of clarity.