Shanghai police say two 17-year-olds were placed in "administrative detention" following the incident at a restaurant where diners simmer food at their own tables.

Haidilao has apologised to customers, saying it has replaced all hotpot equipment and dining utensils, as well as disinfecting other crockery and utensils. The incident happened late in February, though the company's management only found out about it days later,

A popular Chinese restaurant chain is offering refunds to more than 4,100 diners after two teens were caught on video urinating into a vat of hotpot broth.

One of China's biggest restaurant chains has promised to refund thousands of customers after footage of a patron urinating into a simmering hotpot went viral online, triggering a public outcry.

Haidilao has apologised to customers, saying the staff on duty had failed to stop the teens. The company's management only found out about the incident four days later, through videos that had been circulating on social media.