It's engineering drawing by scribbling paper, most of the results of the picture, can appear abstract, there are images that means there are also those who don't, but it is the main attraction for people who saw it.
Read next
From @muammad
It's engineering drawing by scribbling paper, most of the results of the picture, can appear abstract, there are images that means there are also those who don't, but it is the main attraction for people who saw it.