What are the more primitive houses in Africa? Cottages?

It's a bamboo house. It is still used in the mountains near the Democratic Republic of the Congo. Use bamboo to build the frame first, then use bamboo slices to make squares, and stuff mud blocks inside. There is still bamboo on top, spread in three layers. Can be protected from rain. The house is very small, only about three or four square meters for six or seven people. There are basically no beds. They all sleep on the ground.