我们的都市大厦,越来越高高在上,越来越气势凌人,给人以越来越强烈的“拔地青苍五千仞”、“断崖万仞如削铁”的诗意感受。楼顶是开始利用起来了,目前主要是栽花种草之类,可墙壁的荒费却比比皆是。在寸土如金的都市,我们对墙壁的荒废少说也以十万百万平方米计。不过,墙壁,光溜溜的墙壁到底能做些什么呢? Our urban buildings are getting higher and higher, more and more imposing, giving people a more and more intense sense of poetry that is “every five thousand years old” and “hard cliffs like iron”. . The roof is beginning to be used. At present, it is mainly planting flowers and grass and the like. However, the waste of the walls can be found everywhere. In a city where there is no shortage of land, we have less to say about the devastation of the walls in terms of hundreds of millions of square meters. However, on the wall, what can a smooth wall do?