[No System + Lots of Romance + Keeping a Low Profile + Daily Life + Harem]
Ye Xuxian transmigrates into the fantasy world of Tianyan Continent.
His bodily fluids can accelerate time. Doesn't that make him a natural cultivation furnace?
Luckily, he also possesses the rare Flame Yang physique, and his sect agrees to let the immortal maiden Liu Baiqi, who has a Supreme Yin physique, become his wife.
Just as Ye Xuxian is steadily making his way toward the pinnacle of life,
his senior sister Liu Qingyin suddenly turns against him, and the two end up trapped in the venom sac of a demonic ink dragon.
His Flame Yang physique is reduced to a tiny spark, and his cultivation falls back to the Qi Refining stage over three days and nights.
Liu Qingyin, do you really not want me to be your brother-in-law that badly?
Once I recover my cultivation, I'll make you call me that: brother-in-law!
And that other word…
Overall it's good, with a lot of poisonous points, and it uses modern knowledge to develop in the world of immortality. The suggested title of the book is "After being pushed back by my fiancée's sister, I farmed in my sect"