Few of the opinions on the Square are of reference value, they are all driven by big data. When the market is good, it is all good news, inducing you to buy. When it is time to sell, you look at the Square and think it can still rise, and then it plummets. At this time, you look at the Square again, and it is all bad news, inducing you to sell. When you really can't bear it anymore and sell at a loss, it will rise again.