Chinese civilian dwelling culture, stamps
中国民居文化和民居邮票
Mongolia bag looks appearance is very small, but inner space is large. And the indoor air circulation ; good lighting conditions, warm in winter and cool in summer, not afraid to expose to wind and rain.
蒙古包外面看起来小，里面觉得空间很大。空气通风，冬暖夏凉，不担心风吹日晒
