我们把头顶上茫无涯际的空间称为天空。天空其实并不空,除了日月星云风雨雷电可见部分外,还有许多肉眼看不见的物质和非物质,仿佛有一双无形的大手,把春夏秋冬四季推得轮轮转,古人却不敢如此目空一切,不敢随便说出 We call the vastness of the world without boundless space called the sky. In fact, the sky is not empty, in addition to visible parts of the sun and the moon nebula thunder and lightning, there are many invisible material and non-material, as if a pair of invisible hand, push the spring, summer, autumn and winter seasons wheel rotation, the ancients did not dare Go away, dare not say it