Some cities insist on keeping ancient buildings. Other cities want to destroy them. Which do you prefer and why?

　　Well, I prefer the former one.First of all, ancient buildings are reminders of our past. They tell us where we came from and how we get to where we are now. They provide us with the opportunity to appreciate the achievements and the dreams of our previous generations.They recall our goals and dreams.Secondly, we cannot afford not to preserve the historical buildings because they not only bring us aesthetic enjoyment but also have their own architectural and historical values. They are unique in design and we should preserve them for research.In addition, they can attract many tourists and thus contribute to the economic prosperity of the cities.