Two drunk 17-year-old teenagers have sparked outrage after filming themselves urinating into a hot pot broth at a Haidilao restaurant in Shanghai, China.

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,