China stocks fall as Beijing renews support, Hong Kong up
* CSI300 -0.2 pct; SSEC -1 pct; HSI +1.5 pct
* Central bank's injection hints of monetary easing
* China Eastern Airlines falls after Delta agrees to buy stake
HONG KONG, July 28 (Reuters) - China stocks were lower by midday on Tuesday, in volatile conditions, even as Beijing pledged to lend further support after stocks sank 8 percent in the previous session, raising concerns about stability in the world's second-biggest economy.
Chinese regulators said they were prepared to buy shares to stabilise the stock market, while the central bank injected cash into money markets and hinted at further monetary easing.
"Retail investors' confidence in the mainland market is very weak. They prefer to stay away from the market after liquidating their position," said Steven Leung, a director from UOB Kay Hian in Hong Kong.
The CSI300 index fell 0.2 percent, to 3,810.65 points at the end of the morning session, while the Shanghai Composite Index lost 1.0 percent, to 3,688.48 points. The indexes were down 5 percent earlier.
China CSI300 stock index futures for August fell 1.5 percent, to 3,703.4, some 107.25 points below the current value of the underlying index.
The Hang Seng index added 1.5 percent, to 24,721.29 points. The Hong Kong China Enterprises Index gained 0.4 percent, to 11,275.42. Continuación...