If Ye Shikai's conjecture is correct, then this plan is too horrifying. The truth has been hidden at the cost of dozens of lives.
The murder cases of Cheng Mei and Sun Yu were probably staged to pave the way for "Mothman's appearance, collapsing of Huatao Bridge". After the first Mothman murder, the public was half convinced and apprehensive. So by the second time, they'd fully believe in Mothman's existence, especially with those photos adding to the 'seeing is believing' effect.
"So you deliberately got me to mention the chemical plant earlier to flush out the snake," Luo Shiqi said with a significant smile, taking a sip of red wine.
"To be precise, not just to flush out the snake, but to lure it out of its hole," Ye Shikai shook his finger. If I'm not wrong, that chemical plant is where Zhao Rou is hiding something.