hong kong stocks ended with another big loss wednesday as traders await federal reserve boss jerome powells testimony to congress later in the day hoping for an insight into the banks plans for interest rates the hang seng index dived 198 percent or 38873 points to close at 1921835 the shanghai composite index shed 131 percent or 4246 points to 319790 while the shenzhen composite index on chinas second exchange slipped 195 percent or 4053 points to 203991