Need. Official website, Haidilao, said that every employee of Haidilao must have a three-day training in Haidilao New Employee Training Center. Haidilao is a well-known hot pot chain catering enterprise in China, established in 1994 and headquartered in Chengdu, Sichuan Province. The company started from a snack bar, and gradually developed and expanded due to strict management of ingredients, service quality and hygiene.