The U.S. Commerce Department's tough new rules on semiconductor supply promise to set back China's ambitions to develop its own chip industry.
Shein, the leading fashion-app download in the US, was valued at US$100B at its latest financing round, but faces a cut-price discount sale on its own shares.
The Hang Seng Index closed at an 11-year low, with losses in financials and tech, although piecemeal property measures out of Beijing temporarily boosted developers.
September has been a ragged time for mega-caps in particular, with Hong Kong and South Korea especially hard hit.
The charts of the iShares MSCI Brazil exchange-traded fund looks shaky.
The World Bank says other Asian nations that face risks to growth for now are buoyed by exports and higher commodity prices.
Hong Kong and Taiwan declare an end to the mandatory hotel quarantine, while Japan reopens to all travelers.
After the Australian fiscal year ended in June, the Reserve Bank of Australia marked its bond holdings to market - wiping out all its reserves.
Markets in Asia moved lower but it was far from the bloodbath on Wall Street, with Asian currencies the main indicator of economic weakness.
It will be Xi's first trip outside China in almost 1,000 days.