1) The document discusses Earth Buildings, a type of traditional residential architecture found in Yongding, China.
2) Earth Buildings are constructed from packed earth and stone rather than steel or concrete, but are very sturdy. They have thick wooden doors and in some cases fire sinks.
3) There are two types - square and round. The round Earth Buildings are composed of concentric rings and can have over 100 rooms spread over several floors. They served defensive purposes as well as housing people.
1) The document discusses Earth Buildings, a type of traditional residential architecture found in Yongding, China.
2) Earth Buildings are constructed from packed earth and stone rather than steel or concrete, but are very sturdy. They have thick wooden doors and in some cases fire sinks.
3) There are two types - square and round. The round Earth Buildings are composed of concentric rings and can have over 100 rooms spread over several floors. They served defensive purposes as well as housing people.