By the time the dispatched soldiers had reached their designated positions and were ready to shoot, the higher-ups in the Fire Organization's headquarters started inquiring about the mercenaries lying in ambush at the minefield.
One of the mercenaries lying in ambush quickly spotted the traces of four Asians and immediately reported their location and direction of movement to the Fire Organization's headquarters via walkie-talkie.
The moment he began to speak, he was heard by Lin Yifan and his companions up in the trees. They immediately took out a pebble and threw it.
The pebble was what they used to probe their path; thus, before flying up into the trees, Lin Yifan and his group had gathered a handful.
The ambushing mercenary, having just finished relaying his message, was struck in the head by a mysteriously appearing pebble and died instantly.