"Light of City" shows the unique beauty of Hong Kong's neon light, as well as the sleepless urban culture. During the era of golden age, colorful neon signs started booming in the 1970s. The horizontal and vertical neon signs has became the visual culture, representing wide range of industries and forming a neighborhood landmark. Each signboard contains the story behind the city. The number of neon signboards in Hong Kong has continued to decline over the past decade. In our work, we hope to brings the visual to modern age that we were once proudly of.