In Chinese network language, the word "thunderstorm" usually refers to sudden major negative events, especially those in the financial field or investment market, such as financial product default, company bankruptcy, project failure and so on. These events usually bring huge economic losses and trust crisis to investors or interested parties.

The origin of the word "thunderstorm" is not clear, but it is widely used to describe all kinds of unexpected serious negative events. In the network context, "thunderstorm" can sometimes be used to describe other types of emergencies, such as public safety accidents and product quality problems.

In a word, "Thunderstorm" is an image of the network language, used to describe those emergencies with serious negative effects.