"All of the old houses have wooden frames. When the owners moved away, they'd shut the windows and doors up tight. With no air circulation the wood would rot over time, then the tile roofs would cave in and leave a big mess," Liu explains.
「早期的老房子都是木造結構，屋主搬走後門窗緊閉，木頭因為長期通風不良逐漸腐蝕，以瓦片覆蓋的屋頂就坍塌下來，而成了髒亂淵藪。」