That was right!
Poseidon had somehow caught Xiao Lin's well-hidden exhaustion. That man also guessed that Xiao Lin's unusual explosiveness would not be able to last for long, and it seemed like it was nearing its end.
Normally, he could definitely prolong the fight like that, and deliver the killing blow once Xiao Lin had used up all his strength.
However, Poseidon was too arrogant. His pride would not allow him to do so because that meant that Poseidon still lost to Xiao Lin and Xiao Lin's peak power. Even if Poseidon defeated Xiao Lin, who would not be able to retaliate after that? It would not quell the anger in Poseidon.
So, Poseidon was just as anxious; he planned on defeating Xiao Lin while Xiao Lin still had all his power. So, Poseidon gave up on maintaining the close combat fight, and prepared to gather his strongest power to defeat Xiao Lin.