The origin of COVID-19 is still disputable, but more and more challenges has aimed at a military lab in Fort Detrick, Maryland.  Up to date, China govenment has officially impugned such a doubt for four times, demanding an explanation from the US.  Please see following report at:

https://www.toutiao.com/a6920148665789219342/ 

https://www.ixigua.com/6921273186726347278

Many a question also comes from internet, and here is the latest update:  

http://youtu.be/cdQl5qOF.a8 

PS  DPP administration and green media, could at least stop addressing COVED-19 as Wuhan pneumonia before the mistery is cleared up?