Zhao Hai had an earth-shattering plan in his mind. For this plan, he had to improve his status in the forbid it sect. In any large sect, the only way to improve one's status was to make contributions to the sect.
Zhao Hai's current strength was not low. Although he was only a teleportation realm cultivator, and there were many in the unallowing sect who were stronger than him in terms of cultivation, his strength was definitely not low among the core disciples. Moreover, he had just experienced fighting against elder Feng from the lone upper sky sect. It could be said that Zhao Hai's strength could be ranked among the core disciples of the unallowing sect.
However, Zhao Hai had a natural weakness. This was also the most obvious one among all the core disciples of the unallowed sect. He was not one of the unallowed sect's people. He was an outsider.