Following a three-week production halt due to Covid-19 lockdown, Tesla’s Gigafactory Shanghai finally received local government approval to resume operations on April 19. It comes with an onerous condition, however: All of its workers must live on-site at the factory under a “closed-loop system” in order to reduce the risk of contracting or spreading Covid-19. Tesla began preparing for reopening on April 15. By April 19, it had recalled about 8,000 workers, about half of its workforce before the lockdown, according to local media . Returning employees will be working 12 hours per day, six days a week under stringent...