In the article "The Empty City Strategy", "All the officials were pale when they heard the news." Briefly analyze "Everyone was pale" and talk about the role of this sentence in this paragraph.

"All" means that all officials are without exception, and "gone pale" means that they are unable to do anything in the face of danger, and all of them are frightened and their faces change drastically. Use the expressions of the officials to highlight the urgency of the military situation.