"When the President's Ex Becomes Party A" is a gripping urban emotional business war novel. The story revolves around Lin Xi, a technology upstart, and Gu Chengyu, a capital tycoon. Three years ago, the two broke up violently in a rainy night, and Gu Chengyu left decisively, leaving scars that could not be healed; three years later, Lin Xi has become the core person in charge of the "Star Road" project, but Gu Chengyu has returned strongly as an investor, becoming the "Party A" who determines the life and death of her project. Reunion is a battlefield. Gu Chengyu's coldness, harshness, and pressing pressure made Lin Xi think that this was a well-planned revenge. However, in countless confrontations and games, she gradually discovered that the affection and protection behind his cold mask were far heavier than she imagined. Behind the breakup three years ago, there are hidden family pressures, business conspiracies and bloody truths. Faced with the betrayal of their inner ghost, the sniping of their rivals, the oppression of their families, and the unquenchable love in each other's hearts, Lin Xi and Gu Chengyu struggled to move forward in the whirlpool of business war and emotion. They are each other's sharpest rivals and the most tacit comrades-in-arms. When the truth emerges, scars and trust, love and responsibility are intertwined, can they break through the obstacles and rebuild each other's "starry road" on the ruins? This is an evenly matched love game, and it is also a rebirth about growth, trust and redemption.