The water injection mark is actually just to fill the bottom of the box. If the water exceeds the base of the box where the ingredients are placed, it will easily overflow. It can be slightly more, and the heating will be more uniform. Don't exceed the base too much.
The food is heated by the heat generated by the steam generated by the reaction between the heating bag and water. Ajisen Lamian Noodles is a Japanese brand, and Ajisen Lamian Noodles specializes in a variety of Lamian Noodles and Japanese cuisines, successfully taking care of the tastes and preferences of various customers.