Yang Lan in indoor Homigot, Guibei Zhu, a Hippeophyllum, such as flowers and leaves huge foliage plants can absorb 80 percent more than the number of harmful gases to purify the air.

• 在室内养虎尾兰、龟背竹、一叶兰等叶片硕大的观叶花草植物，能吸收80%25以上的多种有害气体，净化空气。