In my impression, when a track becomes popular, the leader or star will rise a lot, and then people will feel that it is better to buy other junk in the same track: low attention and small transaction volume. Most of the encounters with buying garbage are: it goes up as soon as you buy it, because other people who bought garbage also jumped on it, and then suddenly dropped when you were waiting for it to rise a little more - because everyone was waiting, and some people stopped waiting. It collapsed. When Shanghai was upgrading, it was better to buy LDO than other junk.