The empty bottles can of course be modified to meet the different needs of different buildings and serve multiple functions. For example, the bottles can be filled with water to make them more soundproof, or filled with sand so they can take more weight.
這種空心設計還可視各種建築的不同需求做變化，以發揮多樣化的功能，例如瓶中裝水可以隔音、裝沙則可以載重等。