Given that he had already displayed his strength and in turn made Qin Hao fully convinced of what he told him about the Star Shattering Sect, it didn't take nearly as much to convince him to become an elder of the Star Shattering Sect as he had expected. Not just that, but after learning about the Profound Immortal Realm and the Dao Seed Realm, Qin Hao couldn't wait to leave for the Star Shattering Sect. Wanting to learn about the Dao Seed Realm specifically as fast as possible.
After all, as someone who had believed that he was already close to the peak of his realm. Finding out that he was in fact only in the Early Stage of the realm was a shocking revelation. Especially learning about the Profound Immortal Realm that directly seemed like a realm above that of the Celestial Immortal Realm.