According to him, if you want to pack 1000 ping pong balls in a container, you've got to position them at exactly the right positions. By doing that, you can pack more of them in a given space. In magnified photographs taken using an electron beam lithography machine, Yang found that the sodium chloride-soaked wafers had a neater, more defined structure, allowing for a potential six-fold increase of data storage. Though why salt causes this reaction is still a mystery to Yang.
Watch a funny video.