After Cultivating Immortals for 700 Million Years, He Finally Became the Lord of Heavenly Demons

The story of a mortal who overcame obstacles and eventually became a demon lord. Several years later, Zhang Ruochen looked back on the past and sighed: "I once struggled at the bottom, wandered between the righteous path and the devil's path, divided myself into different bodies and traveled in the spiritual world, and transformed into a demon after death." Even though I am a dust, my heart is towards the sky (traditional fairy tale, no golden fingers, no YY)