SHANGHAI – Tesla chief executive Elon Musk departed Shanghai on Thursday, wrapping up a two-day trip to China in which he met senior Chinese government officials, including the highest-ranking vice-premier. Photos and a video of Mr Musk’s visit late on Wednesday to Tesla’s Shanghai factory – the automaker’s biggest production hub – showed him holding up a “Giga Shanghai” sign, flanked by hundreds of staff including Mr Tom Zhu, head of global manufacturing. The video released by Tesla showed Mr Musk praising employees for “overcoming so many difficulties and challenges” and making a heart sign with his hands. Earlier in…