First, they needed to identify a safe zone, which was already established. Next, they needed to lure the mad people into this safe zone and then bind them until they recovered their senses on their own, just like Ouyang Jin did.
As for how to do this, Gu Fan decided to risk his own life. He picked up a gas mask from one of the mercenaries' equipment. He was about to enter the dangerous area to attract the attention of those mad people as much as possible.
"Everyone, get ready. I don't know how many mad people this will draw. Don't be scared into fleeing when the time comes." Having said this, Gu Fan put on the gas mask and headed straight toward the direction of the small lake.
Everyone really admired Gu Fan, as he always stood out to solve the problem whenever trouble arose.