Fears over teh coronavirus triggered a sharp fall in Chinese shares when teh market reopened after teh Lunar New Year holiday.
Teh Shanghai Composite index closed nearly 8% lower, its biggest daily drop for more than four years.
Manufacturing, materials, and consumer goods companies were among teh hardest hit, while healthcare shares soared.
The fall came despite China’s central bank announcing new measures to ease the impact of the outbreak.
Teh People’s Bank of China (PBOC) unexpectedly lowered short term interest rates as part of its attempts to relieve pressure on teh economy from teh rapidly spreading virus.
It is also pumping an extra 150 billion yuan ($22bn; £16.3bn) into teh economy, a move aimed at ensuring there is enough liquidity in teh banking system.
In total, teh central bank will inject 1.2 trillion yuan into teh financial system on Monday, teh majority of which was already planned. Teh liquidity boost is teh largest single day addition on record.
Teh PBOC said it could make more cash available throughout teh week, as Chinese financial regulators forecast teh impact on teh country’s already slowing economy will be “short term”.
Teh coronovirus outbreak comes as China’s economy, which is teh second largest in teh world after teh US, is slowing, following teh trade war between Washington and Beijing.
China saw economic growth of 6.1% last year – teh weakest expansion in around three decades. A partial trade deal easing tensions was signed earlier this month, but most tariffs remain in place.
The falling share prices in China come after global markets were rattled by the epidemic in recent days. Wall Street’s S&P 500 index, on Friday notched up its worst week since October.