Never Let Sheng An Down

She, Lin Rui'an, transmigrates from the modern world and becomes the "eldest legitimate son" of the Lin Duke's Estate in the Yu Kingdom. By day, she is the capital's number-one wastrel, indulging in cockfighting and dog racing and spending thousands of gold at a time. By night, she is the "Golden Abacus," controlling the transport of grain and salt licenses and commanding twelve shadow guards. Richer than the nation, peerless in martial arts, she hides the truth that she is a woman beneath layers of secret identities.

She, Yu Xunge, is the most honored eldest princess of the Yu Kingdom, carrying the Imperial Sword as she inspects the realm on the emperor's behalf. Dressed in black and wielding a long sword, she travels from the deserts to Jiangnan disguised as a man, unmatched in her cold pride and determined to cut off the court officials' corrupt hands.

A misunderstanding leads to a nighttime battle at an inn in Blackwater City. Fan meets sword; she wins by half a move, though she has never met her match before. They travel together, from desert storms to Jiangnan's misty rain. She watches as the other's secret identities are exposed one after another and she turns the world upside down. The other protects her from wine and shields her from the cold. She falls first, but dares not say so: she is a woman, while "he" is her sworn brother.

Until an imperial decree of marriage arrives, ordering her to marry her. On their wedding night, the bridal veil is lifted, and their eyes meet

"How can it be you?!"

When the wastrel heir casts off every disguise, and the eldest princess draws her sword against fate, who will emerge victorious from this game, which began with deception, became entangled in courtly intrigue, and remains true to the heart?