By Joe Cash BEIJING (Reuters) – Chinese Premier Li Qiang went to the World Economic Forum in Davos last week with a mission to present a positive image of the economy and schmooze financial elites: “Investing in the Chinese market is not a risk, but an opportunity.” The message fell flat. As soon as Chinese markets reopened the next day, a years-long sell-off in stocks and other assets accelerated, even as official data confirmed Li’s surprising early reveal that economic growth comfortably hit last year’s target. “The news was not the data. It was Li Qiang in Davos,” said Alicia Garcia-Herrer…