Group 1 - The article provides a practical guide on what food items are allowed on high-speed trains, emphasizing safety, comfort, and public civility [1] - Recommended food items include sealed packaging snacks like nuts, biscuits, and energy bars, as well as easy-to-handle fruits like apples and bananas, which should be pre-washed and cut [3] - It is suggested to avoid strong-smelling foods such as durian and stinky tofu, which can disturb the environment, and to carry them in well-sealed packaging if necessary [5] Group 2 - Self-heating foods and alcoholic beverages with high alcohol content are classified as flammable and should not be brought on board [7] - Passengers are advised to check the expiration dates of food items before boarding to prevent gastrointestinal issues during the journey [7] - For more information on prohibited and restricted items, passengers can refer to the railway's official website or consult station personnel [7]

Group 1 - The article provides a practical guide on how to carry food on high-speed trains while adhering to regulations, ensuring safety, and maintaining comfort and public civility [1]