After Becoming a Sickly Female Cultivator

Before I began cultivating immortality, they all said I wouldn't live past sixteen; after I began cultivating immortality, they all waited for me to die at the beginning of Qi Refining.

The young, sickly female cultivator initially only wanted to survive, but later she wanted to live better, stepping over the white bones of her enemies, and ascending step by step to the heavens!

P.S.: There is a male lead, but no romantic pairing; it's plot-driven and career-oriented.