教室里传来一阵激烈的掌声

Because in this matter, it might be more appropriate for Zheng Yuanshan to take action than Qian Hongda. Because Ji Feng could tell from Yang Xiaoai's words that this matter seemed to involve the police system in Nanyue. So, as the boss of the southern Guangdong police system, Zheng Yuanshan can definitely help....