Hong Kong stocks sank at the start of trading on Wednesday following three days of healthy gains after Poland said a Russian-made missile had hit a village in the country, killing two people, and put its army on alert.

The Hang Seng Index fell 0.95 percent to 18,169, having piled on more than 10 percent since Thursday's close.

The Shanghai Composite Index was flat, inching down 0.43 points to 3,133, while the Shenzhen Composite Index eased 0.1 percent to 2,051. (AFP)