You're the One Writing Love Letters to My Junior Sisters?!

Caught red-handed! Bai Huaichen transmigrates into a cultivation world with an unusual system—the more romance he spreads, the stronger he becomes. His solution? Write heartfelt love letters to every beauty in the sect. "Dear Cangyao Junior Sister, reading this letter is like seeing me..." But when the letters start circulating, jealous senior brothers and furious masters come knocking. Can this shameless protagonist sweet-talk his way to immortality, or will his harem-building scheme explode in his face?