Although California wildfires are a natural phenomenon, the long-term hidden dangers behind their loss of control have not been taken seriously.In the development of enterprises, accidents are the norm. We must always prepare for the worst, reserve resources, maintain flexibility, and not rely on a single market or product in order to stabilize our position in the face of sudden changes.When the wind is calm and the waves are calm, the roof should be repaired, and umbrellas should be prepared in sunny days, so that we can not be afraid of rainstorm.