Why are Lishui dwellings mainly made of wood?

Lishui folk houses are mainly wood structures, which are greatly influenced by topography. Lishui residential style has obvious regional characteristics, which are influenced not only by topography and local culture, but also by architectural culture in other regions, mainly manifested in rammed earth walls, wooden frames and small blue tiles with three bays and five bays. Houses are mostly yellow mud walls, with yellow mud as the main external structure and wood structure inside. They are built on the mountain and have the characteristics of large volume, rigorous layout, unified style and distinctive personality.