Ningbo-Zhousan may not exactly be a household name, but find something in your house made in China, and it’s quite likely it was delivered from there. Ningbo-Zhousan, which overlooks the East China Sea some 200 km south of Shanghai, is China’s second-busiest port, handling the equivalent of some 29 million 20-foot containers every year.

At the time of writing, the port has more than 50 ships waiting to dock. This is because the Ningbo-Meishan terminal, which handles about one-fifth of the port’s total volumes, has been closed for a week after a member of staff tested positive for Covid. With still no word of a reopening, many more ships have diverted to alternative ports.

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