One early morning after the rain in the eastern Chinese city of Zibo, two people dressed as fishermen stir dozens of giant inflatable fish and peppers in the polluted, dark-brown water of the Yueyang River, shouting, "Zibo's hotpot fish!”

A crowd of people point, take videos and laugh at the giant "soup.” Days later, on April 1, 2021, a video of the performance was uploaded to the internet, garnering more than 10 million views. As a joke, someone posted an entry for "Zibo Hotpot Fish” on the popular city-guide dianping.com that soon became the most-liked page in the "local food” category.

The man behind the show was Nut Brother, a performance artist who has been stirring up public opinion over pollution in the country for seven years in the belief that environmental activism that is humorous and creative can have a powerful effect. Six months after his hotpot show, the city government built new sewage treatment tanks to try to clean up the river.