Narration, first of all, you have to think clearly about what you are writing. Every story has a cause, a result, a time and a place, but it doesn't have to be written in the order of cause and effect. You can write in causal order or in causal order. You don't have to write all the times, places and people. Just leave some suspense. Secondly, novel ideas are very important. At the intersection, if you just want to save people from car accidents and help the elderly cross the road, then you are completely blind. The intersection can have real events, imaginary events, the activities of a third party or your own activities. In fact, I already have an idea in my heart. It is good for you to write out the unpaid blood donation points at the intersection.

Argumentative writing is so boring that it is nothing more than positive views, negative views and conclusions. This is a very rigid style. All you have to do is put forward a good point of view, then find an obviously wrong point of view to oppose it, and then draw a public conclusion.