The Phoenix Maiden's Nine Heavens of Immortality

[Underdog's rise + a powerful figure reborn + female-emperor story] After waking from a dream, I transmigrated into the body of a useless young woman from the Li family. I worked hard, cultivating and practicing alchemy like crazy. While putting my younger sister and fiancé in their place, I ran into the two people I'd met in my dream! Can I still back out? The heroine only wants to build her career. Watch me rise step by step through the Dao of alchemy and the immortal realm, and begin my true journey of cultivation...