Using ultra thick insulation and complex doors and windows, the architect engineers a home encased in an airtight shell, so that barely any heat escapes and barely any cold seeps in.

• 被动屋从不同角度面对挑战。利用超厚的绝缘材料与复合式门窗，建筑师将房屋包覆于密闭的壳中，让热空气几乎出不去，冷空气也进不来。