Instead of deploying, they chose to let two 'team leaders' at the early Sergeant level try to stall Mr. Niu.
Because the entire tactical approach of the Student Council was to win this club battle by relying on team leaders and members below that rank, without having to deploy any department head-level members.
After all...
If victory in the club battle could be secured merely by the strength of the middle and lower ranks, it would undoubtedly highlight the Student Council's power, given they still had the upper ranks in reserve.
Moreover, facing the school's teachers, it wasn't shameful at all to have two people take on one.
"Senior Xiong Qi! May I have the honor of learning from you?"
'Yi Zhengyang,' who had suffered a defeat earlier in the battle, was not arranged to participate in the fight against Mr. Niu but was responsible for challenging the former department head of the 'Student Council Academic Department,' Xiong Qi.