In the article " Bridge," the author used metaphor and personification to describe the madness of the virus. The virus was like a black river that kept flowing and devouring life. It was terrifying. It was also like a hungry wolf that was roaring and chasing after life, making people tremble. This description not only vividly expressed the harm of the virus, but also gave the virus human emotions and characteristics, making it easier for readers to understand and feel the madness of the virus.