Xiao Lingyue, who was sent to the enemy country as a hostage by her mother country, used sand table simulations ten years ago to help the enemy's young emperor win military power, but his mother country lost several cities.
After ten years of dormancy, Xiao Lingyue returned to his motherland wearing a military robe. He set fire to the deadly secret letters of the main war faction, manipulated food prices to force out the imperial corruption, and even launched a top-secret double-faced espionage network on the battlefields of the two countries.
When the prince of her mother country ridiculed her as a "lost dog", the young emperor of Yan State tested her loyalty. She brushed her fingertips over the map of mountains and rivers, and said with a voice like broken ice: "At the end of this game of chess, I want the mountains and rivers to change hands."
