天,我们天天见到,从来不大注意。古时人对天很熟悉,越古的人越熟悉。最大的世界叫作“天下”,最高的统治者叫作“天子”,梁山泊好汉“替天行道”,“不知道”是“天晓得”,如此等等。从“奉天承运”的皇帝到喊“青天大老爷”的老百姓,无人不知“头上有青天”。 Days, we see every day, never pay attention. Ancient people are familiar with the sky, the more familiar people more ancient. The largest world is called “the world”, the highest ruler is called “Son of Heaven”, Liangshanpo is a hero “for Heaven”, “do not know” is “God knows”, and so on. From the “Fengtian carrier” of the emperor to shout “God of Heaven,” the people, no one I do not know, “there are blue sky.”