Mainland Chinese stocks roared ahead Tuesday as traders returned from a week-long break to resume a blistering rally fuelled by a raft of measures aimed at reigniting the world's number two economy. Investors have been racing back into mainland and Hong Kong stocks since authorities last month began announcing a raft of stimulus measures to reverse a long period of tepid economic growth.

Mainland Chinese markets rallied Tuesday but were well off their morning highs, while Hong Kong tumbled as traders were left disappointed by a lack of detail on Beijing's raft of

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.