Haidilao, as a catering enterprise, has the right to formulate corresponding regulations according to its own business model and food safety management needs. The rule that customers are not allowed to bring their own ingredients is mainly to ensure the hygiene and safety of dishes and the dining experience of customers, because the ingredients brought by customers may have safety and hygiene problems or may not meet the dining standards of Haidilao.

From the point of view of food safety, the regulation of sea fishing is reasonable. In China, food safety has always been concerned, and many catering enterprises have also been exposed because of food safety problems. By not allowing customers to bring their own ingredients, Haidilao can better control the safety and quality of ingredients and ensure food safety and hygiene.

of course, from the consumer's point of view, it may be considered that this regulation is too harsh and limits consumers' free choice. However, consumers can choose other restaurants according to their own needs and preferences, instead of going to Haidilao. Therefore, I think it is reasonable that Haidilao does not allow customers to bring their own ingredients.