What's the easiest way to write a story as quickly as possible?

I don't mean to make  this hard on you, but, it's actually up to you the writer on how to do that. Since we can't see what you see or are thinking of writing, we can't tell you how to tackle this chore.
I'm writing a book, it's a touchy subject, and I can't ask anyone how to write this, as it's something from my head, and my past experiences.
I can suggest you have a topic, start creating around that topic and let the 'creative juices' flow from there. Best of luck to you. I hope it turns out well for you. :D

Want to quickly write a good article? First of all what you have to do is to collect enough information. Then go to  a site for the Chinese and foreign literature.