Due to one case of COVID? That's Bullshit. Real reason unknown.
World’s Third-Busiest Port Remains Partially Shut in China
The port hasn’t published any updates on its operations since Wednesday, when it halted all inbound and outbound container services at its Meishan terminal after one employee tested positive for Covid-19.
https://www.bloomberg.com/news/articles/2021-08-16/world-s-third-busiest-port-remains-partially-shut-in-china