Xiang used the classic technique of scribbling on a pad of paper to reveal what had been written on the page above.
The face spitting water in the inal panel is Crown Fountain, which consists of two 50 foot glass block towers with LED displays embedded in the facing sides. Each tower displays a video of anonymous Chicagoanâ€™s faces, which change every few minutes. At the end of a 5-minute cycle, the faces in view purse their lips and water shoots out of a concealed jet, making the faces appear to spit into the shallow pool between them. After a moment, the faces fade into a video of a waterfall while water rains down from the top of the towers. During the summer this area is thronged with children and adults playing in the fountain.