(Bloomberg) -- A $1.8 billion project by defaulted Chinese developer Shimao Group Holdings Ltd. failed to find a buyer at a forced auction, underscoring the lack of investment appetite amid a weakening economy. Most Read from BloombergUS Stocks Mixed as Tech Giants Hold Onto Gains: Markets WrapEarth Keeps Breaking Temperature Records Due to Global WarmingXi’s Metal Curbs Risk Backfiring as G-7 Seeks China AlternativeLazard Fires Senior Banker for Inappropriate Behavior at PartyChina Restricts Ex