Chinese stock markets have failed to perform in 2023. Take, for instance, the Shenzhen Component , Shanghai Composite , or the more accessible Hang Seng Index . All three major indexes have lost money for investors over the past week, month, three months, six months, and year. Only patient investors who entered the market four or five years ago would be in the black. Investor optimism toward the world’s second-largest economy has waned after Beijing’s stimulus policy failed to ignite economic growth. A slowdown in GDP growth and an alarming drop in import and export figures also means that China’s yuan hit its lowest level against the U.S. dollar since December 2007. A dollar now yields 7.33 yuan, compared to 6.89 Yuan at the start of the year. As a result, shorting the Chinese currency has been one of the most profitable investments this year, according to analysis by CNBC Pro of…