In the Seven Desolation Realm, the land where demons are sealed, there is a great demon that needs him to refine it with Yuan Ying.

Before that, Zhang Han felt that his Nascent Soul level was not enough, and he didn't quite meet it, so he thought of the means of cultivating demons.

Strengthen the Great Demon Nascent Soul, the degree of strengthening is high, and the success rate is also higher.