Xi Jinping built the smart city of Xiongan as a showcase for China’s technological prowess. But WSJ’s Jonathan Cheng finds it remains largely empty, raising questions about the limits of Xi’s rule.

As President Trump turns up the heat on Beijing, China is trying to become more technologically self-sufficient, but its ...

Trump said he was in “no rush” to speak with Xi on Tuesday, which was the day the administration imposed 10 percent tariffs on Chinese inputs. He followed through on the tarif ...