Core Viewpoint - A small self-service fast food restaurant in Jinan gained popularity due to a negative review, which sparked online discussions and support from netizens [3][4]. Group 1: Business Model and Pricing - The restaurant offers a meal for 5 yuan, featuring 6 to 8 dishes, targeting low-income workers such as delivery riders and construction workers, thus saving them living costs [4]. - The owner, a young entrepreneur, set the price after calculating costs, ensuring it meets the basic needs of customers [4]. - The restaurant's success is attributed to its focus on affordability, large portions, and the owner's use of short videos and online group buying to increase visibility [4][5]. Group 2: Community Engagement and Marketing - The restaurant's rise in popularity is partly due to the community's response to the negative review, with many netizens promoting the restaurant and even contributing food items [5]. - The restaurant's online group buying page humorously features high-end dishes, showcasing a blend of community support and light-hearted marketing [5]. - The owner expressed that the encouragement from customers has motivated him to continue running the restaurant, highlighting the warmth and connection within the urban community [5].