China is sending doctors and medical supplies to Italy and other countries that have been hit hard by the coronavirus. WSJ’s Eric Sylvers in Milan explains how China is using soft power to change perceptions about its handling of the pandemic. The rate of infection for the novel coronavirus accelerated in New York state and the U.S. surpassed 50,000 confirmed cases Tuesday as more governments around the world initiated lockdowns to limit the pandemic’s spread. State leaders urged residents to stay at home as the U.S. reported more than 13,000 new infections Monday alone. But President Trump said in a Fox News town hall that he hopes to have the country reopened in just over two weeks, a timeline that is dramatically sooner than what many public-health experts have…