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.

Chinese hotpot giant Haidilao said it would compensate over 4,000 diners who had visited one of its outlets in Shanghai.

One of China's biggest restaurant chains, Haidilao, known for its hotpot, has apologized and offered refunds to thousands of customers that dined in their Shanghai location after two men urinated in their hotpot broth,