Let's talk about how to have a good chance to buy a lower berth (enough tickets in advance)
First of all, if you go to the window, the conductor in the lower berth will give you a ticket (I will give it to you every time I buy a ticket). On the premise of this train (sufficient ticket source), many people can't buy the lower berth on the internet 12306. When I got on the bus, I found that many lower bunks were empty. Why can't I buy it? At present, the railway has restrictions on the lower berth right of the elderly, but how can we buy it if we are not the elderly? If you buy a sleeper, he will give you a big chance of middle berth, a small chance of upper berth and a small chance of lower berth. When buying two tickets, it is very likely that two tickets are on the same page, or two tickets are on the same page. When you buy three tickets, it is very likely that you have all the tickets. According to this logic, if you travel alone, you can buy three or four tickets together, put your name at the front, and then you can use the rest of your family or friends, so the chances of giving you a lower berth are high, because your name is at the front, that is, your lower berth. Pay directly, and then refund the remaining extra tickets. There is no handling fee for refunding tickets before the specified time limit.