This is from Feb 2nd, "Last year, those parts of China accounted for more than 80% of national GDP,
https://www.google.com/amp/s/www.cnbc.com/amp/2020/02/01/coronavirus-more-of-china-extend-shutdown-accounting-for-80percent-of-gdp.html
Last year, those parts of China accounted for more than 80% of national GDP, and 90% of exports, according to CNBC calculations of data accessed through Wind Information. As a result, these delays in getting back to work could have a significant impact on the growth and international trade of what is now the world's second-largest economy.
Morgan Stanley economists estimated earlier last week that if the Lunar New Year holiday was extended by a week nationwide, January and February industrial production could be hit by as much as 5 to 8 percentage points.
No wonder the market is tanking, this coronavirus is structural shock to China's economy even if temporary.
GDP will have to be made up from imports in US and that's if hundreds of millions in the US are not quarantined to contain virus like in China seeing the Trump admin let the virus spread via incomepence.
We knew Trump was stupid but this can get bad really bad