Liou, the cultural scholar, argues that the competitiveness of cities doesn't derive just from the modernity of their buildings, but also from their charm. "Creating urban charm doesn't necessarily take huge amounts of money or giant construction projects. Street arts provide an extremely low-cost tool for making cities more engaging."
文化學者劉維公則指出，城市的競爭力不止來自現代化的建設，更要比「魅力」，而「城市魅力的打造不一定需要鉅額的資金與巨大的建設，街頭藝術正是成本最低的城市魅力化工具。」