Shi Feiyang had refined nine mother demons; next, he needed to nurture and feed them to grow them. At the right time, they were to bear demon embryos and give birth to child demons. Only then would the Nine Child Mother Sky Demon be considered truly refined. However, to make them grow quickly, they would have to be fed a large amount of fresh flesh and blood. Since Shi Feiyang didn't have any urgent matters to attend to after refining this set of demons, he decided to set them aside for the time being and let them grow slowly.
He had spent over nine hundred days at Gupo Ridge, during which, apart from taking care of Shi Longgu, he also cultivated his Daoist Techniques. He practiced both the He Sha Book and the Chi You Three Disks Scripture, especially Guang Chengzi's Heavenly Book, which he never neglected. Now, the yin residue in his Nascent Soul was diminishing while the yang energy was growing stronger.