【firstly】Make a very tough goal.If completed, you can end the following.Otherwise,continue the rhythm.Can also be understood as a kind of punishment.In brief,Distribution according to ability.

【secondly】If you upper fail, it will mean the beginning of a new world war.The difficulty is lower, but the number willbe doubled.If you succeed, you can end it.Otherwise continue the following

【last】Difficult fixity, the number continues to increase,until the goal is reached.