On the Female Lead's Devotion to a Gentleman

Sang Wanfei now has a thorny problem: She has suddenly found herself sixteen years in the future. How is she supposed to face the people she knew? Especially Gu Qiru, that inscrutable, vindictive, two-faced man. Just thinking about it makes her scalp tingle~ Gu Qiru comes from a distinguished family, and in everyone's eyes, he is the elegant and refined young master Ziheng. But her experience crawling out of countless traps proves that the so-called paragon of virtue is all bull** (profanity), nothing but a facade. One day, Sang Wanfei found the orchid-like gentleman in a pavilion, working on a chess puzzle. "Gu Qiru, do you really think this is amusing?" She was so angry she nearly laughed. All she'd done was help the Minister of Rites with a small favor out of a sense of justice, and he'd immediately schemed against him. Gu Qiru remained composed, calmly placing a black stone. "If my wife has learned her lesson, then it was worth doing." The game was solved. He lifted his raven-black lashes, his gaze gliding over her, though his voice was cool. "Since my wife knows that Qiru is no gentleman..." His expression suddenly turned sharp. "Then Qiru will make sure no gentleman can get near you." Another day, Sang Wanfei found the wide-sleeved man in the pavilion again, idly playing his zither. "Gu Qiru, tell me honestly. Was it you who egged that woman on to keep targeting me?" That woman was going after her as if she had a cheat code, yet there wasn't a shred of evidence. If Gu Qiru had nothing to do with it, she'd do a handstand and dive through a ring of fire on the spot. Gu Qiru plucked the strings carelessly, lowering his lashes as he answered in a mild voice. "I merely gave her a little guidance." She was so angry she nearly laughed again. He even schemed against his own people. Was he even human?? "If my wife hadn't accepted his painting, that woman wouldn't have come after you." "It was a gift to thank me!" "His brushwork is clumsy, nothing like Qiru's." He stopped moving his fingers and turned to smile at her tenderly. "It's enough for my wife to keep a painting by Qiru alone." PS: The female lead is carefree and oblivious. Content warnings: 1. There is a child, but they're not important to the plot. You know, a tool character. 2. This story might not be for readers who are extremely devoted to the male lead. 3. The story opens sixteen years in the future. Theme: A gentleman knows what to do, and what not to do.