Sacrifice from the Start? I'll Go All Out, Disguise Myself as a Goddess, and PUA the Entire Dynasty

[Ancient setting + strong female lead + card-drawing System + face-slapping power fantasy + everyone has a one-sided crush] Su Qingyuan, a laid-back office worker, transmigrates into the body of a fake “goddess” who has been kept by the Temple of the Protecting Nation and confined to its back courtyard for eighteen years. Mysterious and untouchable, she has never seen sunlight. The first time she does, she’s being offered up as a sacrifice and told to die. After three years of drought, the temple, which has long fed on the people’s wealth, can’t bring down the rain. With the people demanding answers, it urgently needs a scapegoat. As flames consume her, Su Qingyuan hears a chime. The Faith Gacha System of the Myriad Heavens has successfully bound itself to her! Spend faith points to draw cards! Su Qingyuan’s eyes light up. She knows how to draw cards! Let’s do a ten-pull! Ding! One “Thunder God, Help Me!” card! Ding! One Rainmaking Spell! Ding… Su Qingyuan gazes down upon all living things. The moment she raises her delicate hand, thunder cracks across the clear sky, dark clouds loom over the city, and rain pours down! The people kneel in tears. “This must be a miracle!” The high monk cries, “No! It’s always been fake, so why is it suddenly real?” From then on, the Great Yan dynasty is turned upside down. The world spreads word that a goddess from the ninth heaven has descended, compassionate toward all living things and possessed of boundless power. Only the System knows that its Host is bold enough to impersonate a goddess! Yet she wins the worship of the people and becomes a god through their faith! * Xia Mianmian, the junior sister of the foremost immortal sect, is a natural seductress but has little talent. So her lovesick senior brothers extract the single spiritual root of their senior sister Su Qingyuan, strip away her golden core, and help Xia Mianmian cultivate. Su Qingyuan is reduced to a useless nobody. Her memories are altered, and she becomes a fake goddess kept in captivity in the lower realm, destined to be cannon fodder. After transmigrating and remembering everything, Su Qingyuan says, “6.” As her reputation grows, she is on the verge of cultivating into a god. The entire sect asks, “Wait, how did she get stronger in a day than we do in a year?” Her junior sister wonders, “Could she have the backing of some hidden immortal sect?” Su Qingyuan replies coolly, “I’m the founder of the hidden immortal sect. Get it?”