Did you make me laugh to death? I don't understand human language in the last 15 days?

For the sake of explanation, an example is as follows:
Assuming you score 16 points every day and deduct 15 points for the day, then on the 4th, your score for today is 1 point. However, if you do not score on the 4th, then today's score will be -15 points. In the next 15-day scoring cycle, the impact of the -15 points will continue to exist in the total score. This impact will last until the 19th, and the new 15-day cycle will eliminate the -15 point impact from the 4th.Points deduction will only appear during the 15-day cycle after the deduction starts. If you don't believe it, you can open your own Alpha score sheet and add up the scores from the last 15 days to see.