Cultivation to Immortality: Seize the Heavenly Spiritual Root at the Beginning

Xu Sancai died suddenly on the eve of the college entrance examination and woke up as a lonely soul in another world, wandering for hundreds of years. He read the memories of thousands of people and saw all the ways of cultivating immortals. However, due to the gradual emergence of ghost nature, he had to find a physical body to re-enter the world. I thought I was just an ordinary rebirth, but I found out that I was actually a rare spiritual root in a thousand years...