Asia stocks extend losses as Shanghai hit by more weak data

Asian stocks sank on Tuesday, with Shanghai tumbling more than three percent, following another batch of data showing weakness in China's economy, while gold and the yen advanced as fears over the world economy sent investors into safer assets. Traders are also keeping an eye on the release Friday of a crucial US jobs report, which could play a key role in the Federal Reserve's decision on whether to raise interest rates next month, adding to market uncertainty. There are fears a rate hike will