translation.en: There's this focus that, once it becomes intense, leads to a sense of ecstasy, a sense of clarity: you know exactly what you want to do from one moment to the other; you get immediate feedback.
translation.zh: 首先是精神的集中 集中到一定程度 就会走向狂喜 清醒 可以很清楚的知道自己下一刻该做什么 因为你能够得到即时的反馈