The Two-headed Wolves made them think they wouldn't come out during the day, so Gu would explore during the day and hide in the stone house at night.
Before we entered the city, Gu and another injured person felt their injuries had almost healed, so they decided to venture further.
During the days they camped in the stone house, they only dared to go as far as the city walls, as this area was the closest to the walls and was part of the city's outskirts.
With no other choice, since they couldn't find any flaws in the city walls, they decided to explore further into the city.
Their team brought explosives, but they weren't left with any; the mysterious team took all of it.
So, their idea of blowing up the city wall was somewhat unrealistic. If they relied solely on shovels to dig through, they would likely starve before digging through the thick stone walls.
When Gu and his companion went out, they encountered a Werewolf, and this Werewolf was one of their missing teammates.
