"To think that the Elf Queen didn't send her elites to their death! Nevertheless, defeating a traitor such as yourself can be considered an unexpected gain." Having already clashed with Zhou Tian, the three beastmen had a gauge of his strength. In their view, Zhou Tian indeed had considerable power. At least, none of them felt confident to claim victory should they encounter him.
However, no matter how strong Zhou Tian might be, able to hold his own against any of them, he was still alone. The beastmen had three members. Even if their strengths were matched, they didn't believe they couldn't take down Zhou Tian three against one.
Thus, after mocking Zhou Tian, the three beastmen promptly initiated their attack against him.
The three beastmen were a werewolf, a tiger-man, and an elephant-man.