Hong Kong, China shares regain a little ground, state energy firms down
* HSI +0.4 pct, H-shares +0.4 pct, CSI300 +0.4 pct
* PetroChina down again after state auditor's report (Updates to midday)
By Grace Li
HONG KONG, June 24 (Reuters) - Hong Kong shares early on Tuesday clawed back some of the previous session's big losses, while China's onshore markets also edged up in choppy morning trade.
Gains in Hong Kong were capped largely by losses in Chinese gas and oil firms, which were impacted by an anti-corruption drive in the sector.
At midday, the Hang Seng Index and the China Enterprises Index of the top Chinese listings in Hong Kong both were up 0.4 percent. The Hang Seng, which tumbled 1.7 percent on Monday to its lowest close since May 21, finished the session at 22,884.80 points.
The CSI300 of the leading Shanghai and Shenzhen A-share listings rose 0.4 percent, as did the Shanghai Composite Index, which was at 2,032.38 points.
On Monday, the Hang Seng was up at midday, thanks to a good China factory survey, but then it plunged in the afternoon - mystifying many analysts - and ended the day down nearly 400 points.
"The drop was totally unexpected, with a volatility that hasn't been seen for a long time," said Larry Jiang, chief strategist at Guotai Junan International. Continuación...