First enlarging a series of black-and-white photographs, Quo Ying Sheng then used transparent and opaque watercolors, crayon, and pastels to paint the appearance of the city and his impressions of this foreign place directly onto the photos.
郭英聲先將黑白照片放大到約 10 × 12 吋，再以透明、不透明水彩及蠟筆、粉蠟筆彩繪城市面貌與異地觀感。