They both sit on the floor staring at each other as they think of what to do, actually they knew what to do but didn't know how to do it.
The task is to establish a temporary shelter in this garden of rock, so they will sleep there tonight, wake up tomorrow and continue their hunt, then come back at night to rest here. This is the only safe place they have seen since getting shoved into the Bree forest, so they won't be going past it's vicinity as they continue their hunt.
But the problem is, building a small house seems to go past their imagination, not only did they have nothing here but a bunch of rock, but none of them have built a house before, so they had a lot of problem thinking of how to build one.
They would stand up and walk around a few times, only to come sitting back down after their thought exalt in nothing, they did this for several minutes before Sifeng finally spoke as an idea popped into his head.