Volatile global markets showed signs of a respite from the recent blood-letting on Tuesday, as bargain hunters helped Asian stocks off three-year lows hit on fears that China’s economy was risking a hard landing, with Chinese shares losing another 5 percent. The MSCI’s broadest index of Asia-Pacific shares outside Japan jumped 1.7 percent after an initial dip to three-year lows while Japan’s Nikkei (.N225) index also erased most of its early losses after an initial drop of 4.3 percent. U.S.