Hong Kong's Hang Seng index prolonged its downward trend on Wednesday as fears about possible Greece's financial collapse and global slowdown returned. Hang Seng index lost 0.86% or 178.47 points and closed at 20,627.78. China Life Insurance tumbled 6.5% after the firm released a profit warning. Worries about global growth pressed commodities with China Coal Energy giving up 1% and Jiangxi Copper Co declining 1.9%. Industrial & Commercial Bank of China slipped 1% after giving Goldman Sachs the permission to sell its stake.