我们说，衣、食、住乃是人类生存所不可少的三个要素。建筑房屋则是人区别于动物的特征之一。人类从起源时起，住所问题便是为了居住而必须解决的问题。人类祖先在刚刚脱离动物界的爪哇直立猿人时期，还生活在热带茂密原始森林里；他们住在树上，否则，他们在野兽出没的密林中? We say that clothing, food and shelter are three essential elements of human existence. Building housing is one of the characteristics that distinguishes people from animals. From the beginning of mankind, the problem of dwelling place is the problem that must be solved in order to live. The ancestors of mankind still lived in the dense tropical forests of Java during the erection of the Javanese Ape in the animal kingdom; they lived in the trees, otherwise they were in the jungle where the beasts were present?