Is it better to take the high-speed train for cold noodles or steamed buns?

Eating salad powder and steamed buns is better than eating steamed buns by high-speed rail. High-speed rail belongs to a closed space. It should be noted that the high-speed rail should bring food: food with odor cannot bring high-speed rail; It is also forbidden to bring high-speed rail to meals with soup that is easy to pollute the carriage; Food that needs heating or knife assistance can't pass the security check. When traveling abroad, we should pay attention to the principle of small packaging, convenient carrying and ready-to-eat So it's better to eat salad powder and steamed buns and take the high-speed train than eat steamed buns.