Why are there so many trains crowded during the Spring Festival?

We who were born in the 1980s have a deep understanding of how crowded the green trains are during Spring Festival travel. I believe that those born in the 1990s and 2000s cannot understand this. During the 40 days of Spring Festival travel, more than 3 billion people moved, which is equivalent to two major migrations of people across the country. In the 1990s, when there was no high-speed rail, crowded was a luxury word. At that time, there was no 12306 online ticket booking, so you had to go to the train station or queue up to buy tickets. Each ticket was charged an additional 5 yuan purchasing fee, and you even had to buy high-priced tickets from scalpers. Crowded is a good word during the Spring Festival travel period. At that time, your feet can’t touch the ground and you won’t fall down because you are already being squeezed by people around you. It takes at least half an hour to go to the toilet because you need to move slowly. When you get to the toilet door, you have to wait for a dozen people standing in the toilet to move out; passengers getting on and off the bus have to lift heavy boxes above their heads when passing because there is no space at all in the aisle.

But even if it is crowded like this, the magical trolley can still flow smoothly, "Beer, drinks, mineral water... Master, please put your feet away..."

The most desperate Once during the Spring Festival travel period, we were squeezed into a hard-seat carriage for 20-30 hours (normal operation is 23 hours). In 2007, the region suffered a severe snowstorm that had not happened in a century. The train passed through Tianjin north and started to stop and go. When walking, no matter how slow the car is, there is hope as long as you move forward; when stopping, everything is unknown, you don't know where you are and how long you will stop. The restless breath is mixed with the irritating smell of barreled instant noodles. Filled the entire carriage. I believe many people swear after getting off the bus that they will never squeeze into a hard seat again. In fact, every time we squeeze out of the car, everyone will have this emotion, but this time, we have a deeper understanding of "how painful it is."