U.S. President Donald Trump's return to the White House has raised questions about how much influence Elon Musk — his largest campaign donor and the world's richest person — might wield, especially over China policy. What's the scope of Musk's business interests in China, and is China counting on Musk to help improve U.S. ties? Here's what you need to know. https://s.nikkei.com/3E01oPO