Hang Seng pharmaceuticals sector slumps more than 6%, Kintor Pharma falls 20%, Fosun Pharma down 16% as investors cheer Merck's antiviral pill.
  $Pharmaceuticals(LIST1067.HK)$ 
  $FOSUN INTL(00656.HK)$ 
  $KINTOR PHARMA-B(09939.HK)$