Patience is an essential quality for a hunter.
Wu Hen was indeed a fine hunter, but he was by no means a good cultivator, and even if one day he crossed into the Cultivation World, his lazy nature would probably lead him to be trapped in someone else's soul refining banner, merely another ghost laying flat. If a Cultivation World bigwig tried to use a thousand Wu Hens to forge a soul banner, it would likely end up useless.
After becoming a Holy Soul, Wu Hen had not seriously practiced cultivation for even a single day and refused to learn any complex Holy Techniques.
With his current circumstances, he could choose from numerous Earth Xuan Saint Techniques laid out before him.
Qingxi's diligence only highlighted Wu Hen's lazy approach to Cultivation World studies.
"Junior brother, it wouldn't hurt to learn one or two Earth Xuan Saint Techniques for self-defense," Qingxi kindly advised.