Group 1 - The incident involving the school lunch provided by Shanghai Green Express Industrial Development Co., Ltd. (Green Express) has raised concerns about food safety and quality in school catering services [1][2] - Green Express stated that not all batches of the shrimp and egg dish were problematic and committed to enhancing food safety supervision [1][2] - The Shanghai Minhang District Market Supervision Administration has initiated an investigation into the matter [2] Group 2 - Starting from the fall semester of 2024, Shanghai will implement an AB meal system for students, offering at least two meal combinations daily, which has already been largely adopted across primary and secondary schools in the city [2] - The price for each lunch is set at 18 yuan, with the menu including shrimp and egg dishes [2][4] Group 3 - Parents have expressed dissatisfaction with the quality of school lunches, often finding them unappetizing and preferring alternatives from fast-food restaurants [5] - Analysts suggest that the issues stem from a lack of stringent oversight and enforcement of regulations in the school catering industry [5] Group 4 - Green Express is linked to New Hope Liuhe Co., Ltd., with its actual controller being a Hong Kong company, GreenExpress Foods, Limited [6][7] - The company has faced multiple lawsuits related to health and safety disputes in the past [8] Group 5 - The campus catering industry in China is significant, covering over 46,000 schools and serving more than 237 million students, making it a key area for regulatory focus [11] - The introduction of the national standard for campus catering services, effective December 1, aims to standardize and improve food safety practices in this sector [12][13] Group 6 - The new guidelines require catering companies to have dedicated food safety personnel, implement centralized procurement for major food items, and ensure traceability of food safety inspections [13][14] - The implementation of these guidelines is expected to reduce irregularities in campus catering services and prompt necessary changes among catering companies [14]