Very soon, a sturdy bamboo wall over half a meter high, slightly inclined towards the shelter, was built.
But this wasn't the final form. He gathered lots of fresh green branches with broad leaves nearby and wedged them layer by layer into the gaps of the bamboo wall, making the entire surface even more compact.
"This is a heat reflection wall," he patted the green wall with satisfaction and said, "Its principle is quite simple."
"This wall can effectively block the cold wind blowing towards the shelter. Then, the heat radiated by the campfire will be blocked and reflected back into my shelter."
"A simple structure can double our fuel efficiency, and this is a complete wilderness campsite system."
At dusk, Lin Yu'an could finally sit down and enjoy his new home.
A pile of campfire burned fiercely at the shelter's entrance, and its scorching energy was continuously channeled into the sturdy and warm little green house behind him by a cleverly designed reflection wall.
