The Hong Kong MTR station is crowded with people, and there is always something in everybody. As small as an oblique backpack, as large as a half-person-height suitcase. A while ago, there were music students who were carrying cello and guzheng, all of whom were refused entry because of their size. There was an uproar. Music students who do not have private cars and are rich in taxis to and fro every day have to ask staff to measure whether their musical instruments exceed 145 cm in length, width and height when they pass the subway gates. If so, you have to submit an application form, and you can take the subway only if you have an application form.

　　At the crowded Kowloon Tong Station, during commuting hours, everyone carries something big or small: a big red, blue, and white bag on a two-wheeled cart, a four-wheeled large, medium, and a small suitcase, and a hand-carrying one or two big bags. Shopping with eco-friendly bags, someone pushed in with a bicycle. We people posted people in the car like sardines caught by the net in the sea. We were in a bad mood, and the new advertisements in the car shocked me. It was a few people squinting at the rucksacked man, with the big words on it: "When you run into a stubborn person, don't do a bumper car, put down your rucksack, you will not run into a person." The whole picture put all the hostility away. Malice appeared in the small, breathless carriage manufacturing of Kids Luggage, Cloth box Luggage, ABS trolley luggage, etc.

　　When did the rucksack become the target of public criticism?

　　If the rucksack is not big or small, if you accidentally bump into the person next to you, and say sorry to each other softly, it will disappear, but a revelation of putting this matter on the subway in a big fuss, then The expression of disgust on the screen is like a smoke bomb, once it erupts, it starts to spread disgust. When you saw the advertisement, you subconsciously looked at the people next to you, and squatted secretly, keeping a distance from the people in the same car. All of us trembled, lest the disgusting eyes fall on ourselves.