《列子·天瑞》有这样一个故事:“杞国有人,忧天地崩坠,身亡所寄,废寝食者。”意思是说,有一个杞国人,整天担心天塌,自己无处存身,以至于寝食不安。这就是成语“杞人忧天”的出典。一般意义上说,“杞人忧天”指的是不必要或无根据的忧虑,所谓“世上本无事,庸人自扰之”。这是一 “Liezi Tianrui” has such a story: “There are people in the Qi country, which have fallen in disgrace and have been sent to death.” The meaning is that there is a Chinese who fears heave the sky and has no place to save himself. So disturbed sleep. This is the idiom “unfounded” appearances. In a general sense, “worrying about nothing” refers to unnecessary or unfounded worries. The so-called “nothingness in the world is phlegmatic”. this is one