For example, if you lose 15 points, then after participating once, you will need to earn an extra point every day to make up for it. If you happen to participate a second time and lose another 15 points, it means you will have to earn two extra points every day to recover. Even if you double your efforts to earn points (which doubles your costs), you can only accumulate points day by day. Meanwhile, a large number of people who haven't participated yet will continuously surpass you. Moreover, the points cycle is 15 days, so it will be very difficult to participate for a third time, or the costs might not allow it, and you will have to wait for the next 15 days. This means that under the situation of losing 15 points.