The Wall Street Journal Chinese Half-Marathon Champion Is Disqualified—Along With Runners Who Let Him Win — Video showed other athletes appearing to slow down for a top Chinese runner at the Beijing Half-Marathon; an investigation put the blame on a sponsor. China Hits U.S. With Levy on Chemical as Trade Tensions Rise — China slapped a levy on imports from the U.S. of a widely used chemical, a small salvo in an escalating trade dispute between Washington and Beijing. China Orders