Reincarnation is a profound and terrifying proposition.
Zhou Yi had meditated on the Buddhist scriptures for thousands of years, and his cultivation of the soul increased his efficiency by half. Within a hundred years, he had already reached the great achievement of the Nirvana Sutra.
As his understanding of the Buddhist scriptures and Cultivation Techniques deepened, his knowledge of the secret technique of Nirvana and reincarnation became clearer, far surpassing even that of the High Monks. The so-called Nirvana and rebirth were more accurately a transformation.
The Secret Technique sought out a similar flower, using the High Monk's residual thoughts, to transform a spirit child!
In the world, there were only spirit children, mostly because infants have weaker souls, which are easier to transform.