Mainland Chinese stocks returned from an extended break with a roaring start on Tuesday, scaling multi-year highs as investor exuberance over Beijing's aggressive stimulus measures showed no signs of easing.

Traders are closely watching for additional policy measures as Beijing has signaled a sense of urgency in bringing its economy back on track.

Chinese chip stocks gained $13 billion on Monday as traders expect Beijing to extend stimulus support to the semiconductor industry on Tuesday.

Goldman Sachs has upgraded its expectations for Chinese stocks, telling investors that shares could go a further 20 per cent higher after a historic rally following Beijing’s pledge to do more to stimulate the economy.