“天地四方曰宇,古往今来曰宙。”这是中国古人的一句话。以此为题有两层含义,一层是我们分析问题时,要把事物放在时间和空间的坐标轴上,找准自己的确切位置;另一层是,在考虑事物本身的发展时,要把握时间和空间的变化规律,从宏观上指导微观的正确发展。目前,钢铁企业效益很好, “Heaven and Earth Quartet said Yu, ancient saying goes to the universe.” This is a Chinese ancient saying. This question has two meanings. The first is that when we analyze a problem, we should place things on the axes of time and space and find out exactly where we are. On the other hand, when considering the development of things themselves, We must grasp the changing rules of time and space and guide the correct development of the microcosmic from a macro perspective. At present, the iron and steel enterprises benefit very well,