The Xiao family has been brave for generations, but there is a curse that no one can solve: men cannot live past forty, and women cannot live past forty-five.
Medical techniques cannot detect the cause of the disease, and poison techniques cannot detect traces. Every child of the Xiao family seems to have been grabbed by fate, and they are rapidly declining in the prime years of their lives.
Xiao Yunzhao is the most outstanding "legitimate son" of this generation, with outstanding literary and military skills. No one knew that there was a girl hidden under the skin of this young general.
She disguised herself as a man for fifteen years just to find out the truth about the curse.
The clan elders kept their secrets secret, the sudden visit of the Beiyuan envoy hid murderous intent, and the marriage of the Tianqi royal family had implications - when the Four Kingdoms chess game slowly unfolded, Xiao Yunzhao discovered that the family's curse was just the tip of the iceberg.
What is hidden behind the thousand-year intermarriage between Beiyuan and Tianqi? Why did the blood of her Xiao family become a sacrifice to maintain the balance of the four kingdoms?
Since fate wanted her to be a chess piece, then she - overturned the chessboard.
