For the Godfiend Sea, Han Fei was just a passerby, even if he was actually a proper "demonic" cultivator.
However, in this world, the so-called demonic path was actually just a different path. In essence, it was no different from those super forces. For example, could the Heavenly Race consider themselves righteous? Of course not. Many things they did might be even worse than the demonic cultivators.
After leaving the Godfiend Sea, Han Fei didn't choose to leave immediately, because he didn't know if anyone was ambushing him in the Infinite Mining Area. He had so many trump cards, so he shouldn't waste them in the Infinite Mining Area.
Although he knew that the source of the chase was the divine beasts, with his current strength and capital, he was not qualified to directly challenge the divine beasts.
He would return to the Infinite Mining Area soon, but definitely not now.