第二个私信让我想起来小学做过的那种一边接水一边放水的数学题……以前觉得有病，现在想想还挺有道理的，私信人你要不要先算算你家欠钱的速度以及日常花销，然后算算你能赚多少钱，你确定光凭你自己能把你家池子里的水放完吗？
The second personal letter reminds me of the maths that I used to do in primary school when I thought I was sick and now I think it makes sense. Do you want to count the speed of your family's debt and the daily expenses, and then how much money you can make? Are you sure you can put the water out of your pool on your own?