Asia stocks extend losses after weak China data, Tokyo slumps

Asian stocks sank on Tuesday after more data showed weakness in China's economy, while gold and the yen advanced amid a search for safer assets, sending Tokyo tumbling almost four percent. Traders are also watching the release Friday of a US jobs report, which could play a key role in the Federal Reserve's decision whether to raise interest rates this month, adding to market uncertainty. There are fears a rate rise would further jolt confidence in the global economy, which has already been rocke