Pulling their guns, Shein and HK exchanged a glance but did not follow the shadow to not alert their enemy. Therefore using the time when the person was hesitant to throw the bomb, Shein threw a small and insignificant tracker on the man quietly without his notice.
So even after the man left, Shein and HK were not in hurry to follow him instead they reached for their cell phone and tracked the guy's location. As Shein had guessed, the guy was not heading towards the mountain instead he headed in the opposite direction towards the farmland.
Loading their gun, the two of them observed the surrounding and tried to sense if there were anyone left behind to watch the house. Only when they were sure there was no one around did the two of them leave the house through the front door.