'Artist Tsang Tak-ping has been sketching on different sized sketch books since his student years in the mid-1980s. Three years ago, inspired by Techniques of the Observer: On Vision and Modernity in the Nineteenth Century by Jonathan Crary, Tsang started a series in A5-sized sketch books. All of it was done on public transport - ferry, bus, mini-bus and train - as well as in public spaces such as cha chaan teng (Chinese teahouses). The speech bubbles in the sketches are text fragments from his daily life, reading notes, and Facebook wall posts. Together, he creates a visual effect that pronounces the kind of acoustic environment we live in, a heterogeneity of noise-making in this postmodern age..' - from publisher's website

「走進公共巴士、港鐵、茶餐廳，混雜的聲音從四方八面湧入耳中，一點一畫勾勒、塗改、強化和創造我們眼前的幕幕風景。……喂…喂…我現在……我要證明俾佢睇…咇……咇……咇……其實你…要革命先要革自己的命…叮…叮…叮…或者……為什麼…生病時的步伐才回復正常…咔…咔…

本書的概念源於Jonathan Crary的 《觀察者的技術: 論十九世紀的視覺與現代性》，以 live - sketching 的方法，收錄了作者經過或逗留於不同公共空間時，所畫的百多張即興寫生。

作者曾德平更將自己的生活聽聞、閱讀心得、朋友留言，片言隻語地嵌入畫面之中，把細碎敏銳的線條連結起來，編造眾聲喧囂的後現代響章。」- 節錄自出版社網頁