Group 1 - The article provides guidelines on items that can and cannot be carried on trains, emphasizing the importance of proper packaging and handling to avoid contamination and safety issues [1][3][4] - Specific food items such as meat, poultry, and eggs are allowed if properly sealed and stored, while certain alcoholic beverages are permitted under specific conditions, including a maximum alcohol content of 70% and a total volume not exceeding 3000 milliliters [3][4] - Personal care items like perfumes and sprays are allowed in limited quantities, with restrictions on container sizes for flammable products [6][7] Group 2 - Items such as knives with blades longer than 60mm are prohibited for carry-on but can be checked in, while smaller knives are allowed [7][11] - Certain recreational items like folding strollers and wheelchairs are permitted, with specific guidelines for electric wheelchairs [8][9] - Prohibited items include flammable liquids, certain tools, and weapons, which cannot be carried on or checked in [14][15] Group 3 - Smoking is strictly prohibited on high-speed trains and in designated areas of regular trains, with fines imposed for violations [18] - Passengers are allowed to carry a limited number of electronic cigarettes and lighters, but usage is restricted [18] - Guidelines for transporting small animals, such as guide dogs and pets, are provided, including weight limits and health requirements [19] Group 4 - The article outlines procedures for reporting lost items, including using the railway's official app and contacting customer service for assistance [20][21][22][23]