it comes at a steep cost to its economy and has implications for the world. we re forecasting that the lock doin in shanghai will rock china s economy. shanghai is an economic powerhouse for china. it holds one of two stock exchanges. shanghai s port accounts for something like 3% of global car fare through put at any given time. reporter: shanghai is home to the world s busiest container port. it remains operational but according to logistics platform project 44 an april 18th some trucks had been diverted away. waiting for 12 days before they re picked up and delivered compared to just four days in late march. shanghai is also a major abeiation hub, but the outbreak has forced the suspension of many flights causing air fright rates to skyrocket. all of this is putting more pressure on global supply chains. this is having a supply shock. a lot of these shipments now