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晚饭吃了很多。由于消化能力差，胃里的食物、肠子里的半成品，都在不急不慌地享受着愉快的分解过程。这直接导致我的大脑长时间供能不足，连续数个小时困顿，无法看书、学习、思考。连大腕的普洱茶都不起作用，反倒弄得腹胀难忍。

This note summarizes the material in a MOOC, LHTL.

Rather than from the altitude of events, from their gradient comes the happiness. This point cannot be more crucial, since it is the road to happiness.

一封信：

In a cloud was I wandering, before the snow-storm in altitude 3.6 kilometers. Within the cloud was I wondering, surrounded by Zarathustra’s words.