Asian markets get walloped, with weak China data compounding Friday's U.S. sell-off. Hong Kong -2.3% to 18130. China -2.7% to 2309. India -0.8% to 15835. In Tokyo, the Nikkei -1.7% to 8296, while the broader Topix fell as much as 2.2% earlier, hitting lows not seen since at least 1985.