$Dow Jones U.S. Oil & Gas Index (.DJUSEN.US)$ The outbreak h...

$Dow Jones U.S. Oil & Gas Index (.DJUSEN.US)$ The outbreak has disrupted communication between countries and regions. Since entering the modern society, the global division of labor is an important means to promote the global economy to a higher level. Where energy resources are cheap, it exports more energy. Which country population labor cost is low, that he is more responsible for import processing and re-export. Which country has more technology research and development, then he is responsible for the export of more technology. The global division of labor is like a production line. It is interlinked. If one link goes wrong, upstream and downstream are forced to stop. When the dynamic balance of the production line is broken, it is prone to problems.