The drone flew high above, looking down on the wilderness where two tiny figures busied themselves repairing a rocky cave entrance.
They stripped the bark from tree trunks, fashioned them into threshold-like long strips, and placed them at the very bottom of the cave entrance, digging out the mud from beneath the boulders and wedging small stones into the gaps to secure them firmly in place.
Stones were used to fill the bottom layer, with long wooden strips stacked on top, and Bi Fang had even carved many small grooves into the timber to add texture to the wall surface.
The wooden strips were connected using mortise and tenon joints, a simple yet practical solution.
Once stacked, the construction resembled a solid layer of wooden wall, leaving only two openings: one was a stone flue leading outside for smoke, and the other, smaller than the original cave entrance, would be fitted with a wooden door.