Shares in China have slumped as details of economic stimulus plans from officials in Beijing failed to meet investors' expectations, while other markets in Asia are higher

China's stock markets roared back from a week-long break to reach their highest levels in more than two years at the open, before paring gains after officials failed to inspire confidence in stimulus plans intended to revive the economy.

Mainland Chinese markets rallied Tuesday but were well off their morning highs, while Hong Kong suffered its worst day in 16 years on disappointment at a lack of detail on