In any other situation, he would refuse to engage in something as silly as this. However, his objective was different from the rest of the Yan clan.
He not only wanted to capture Yang Chen but he also wanted to extort their movement skill. However, his plan was destroyed when Yang Chen revealed the ability of his armour.
Now that the latter mentioned handing out his movement skill on his own accord, there is no way he would let go of this chance. After all, from his point of view, a Heaven Grade skill was like a precious treasure that was worth even risking one's life for.
As evident by his aura which fluctuated intensely when he brought up the topic of his movement skill.
"Hmm, why should I go along with your antics? I can simply get the movement skill after I capture you and bring you back to the Yan clan. At that time, we can easily pry your mouth open".
