What's the meaning of the spring rain in Rome?

Roman spring rain is an idiom used to describe sudden difficulties, pains or unfortunate situations. It originated from the climate characteristics of ancient Rome. In spring, gloomy weather and sudden rainstorm often appeared in Rome, which brought inconvenience and trouble to people. In language, this idiom is used to describe people who suddenly encounter misfortune when they are calm, and it has a sudden and unpredictable meaning. However, it should be noted that this idiom is not directly related to the real weather conditions, but is more used as a metaphor and metaphor. I hope I can help you!