Book 29 by Lu of the Bridge of Helplessness

After transmigrating, Lin Chuhang not only turned from a strapping man into a delicate young woman, but also became the sect's highest-grade Sacred Cauldron. Determined to avoid being turned into flower fertilizer, she vows to defy fate and change her destiny! The key to breaking out of her predicament is her senior brother Shen Qingxuan, the Pool Keeper, who is as cold as ice and keeps everyone at a distance. To save herself, she puts aside her straight man's soul and is forced to hone her green-tea skills, using tears and cunning to escape alive.