In this world, no one has yet produced items like "pen" and "paper."
At least, according to the chat records and trading mall, as well as the Survival Points Mall, it can be basically confirmed.
Without pen and paper, Lin Yue could only find a piece of ground to use a stick as a pen to write and draw on the ground.
"There cannot be a lack of defensive facilities around the Shelter, like ancient city walls that can resist certain attacks..."
Lin Yue drew a dot in the center of the ground to represent the Shelter, and then drew an open circle around it.
"Well, when building city walls, a certain land area must be ensured. The gate seems to only be a stone gate, but that would only defend against ordinary mutated creatures..."
Walls can't keep out people.
The most ordinary Survivor could use a ladder to climb over the wall.
Lin Yue looked at the city walls he could currently build, only about three meters high, which would be no challenge for someone with a ladder.
