Han Fei didn't intend to expose himself. He planned to play dirty until the end. Anyway, it was four against four, and neither party dared to attack rashly.
As for cooperation, that was pure nonsense. The An family had coveted the Raging Sea for a long time, and the An family's Monarchs had tried to enter the Raging Sea more than once.
However, at that time, they could only send their projections to the Raging Sea through the Soul Sealing World. Although Han Fei didn't know how they did it, it probably wasn't from the Raging Sea's entrance. They might have used some other means. Therefore, the Beast King and Chu Hao's remnant soul could narrowly block them.
Of course, in Han Fei's opinion, there was another strong master guarding the Raging Sea. This mysterious person had never appeared.