The second volume of "Preface Tour" is a copy of the management of science and technology in the fourth grade Song Dynasty.

1, the first is the time sequence. That is, the order of tour time. What to look at first, then what to look at, according to the order of looking at the scenery, to describe the scenery you see, only in this way can we be organized and not chaotic.

2, followed by the directional order. That is, stand at a fixed point and observe and write in different directions. This way of writing can introduce the scenery more comprehensively and carefully, so that readers can see it at a glance after reading it.

3. Finally, change the order of the scenes. That is, with the movement of footsteps, different scenery and scenes are transformed. When you visit, the pen falls wherever you go. This way of writing can make the composition more vivid and concrete, and make readers feel immersive after reading it. According to these orders, you can visit the copy of fourth-grade Song science and technology management well.