Today, the two aborigines made a stove to boil water with some simple tips:
Firstly, they burned tree branches to make charcoal. Then, they put some water into the charcoal and used a bamboo trunk to shape charcoals, used a stick to make the charcoals airy. Next, they dried the charcoals under sunlight. After some hours, they collected the charcoals, put them into the stove which have two spaces. They used a big leaf to create air current to make the charcoals constantly hot.
Let’s check this video to see how they did it: https://www.youtube.com/watch?v=Fm-L_PUoxzY&list=PLYKvmFgUQVBvsetPJYV2f2T4J6PGndNMv