no. In principle, "selling and selling hot food" is considered to be a "catering service project that produces lampblack, odor and waste gas", which usually produces lampblack; However, steaming, boiling, microwave and other methods are used to heat the finished product to a suitable temperature, and operations such as food unpacking, plate setting and seasoning are allowed. Such as: noodle wonton processing, refrigerated box lunch heating, frozen (Tibetan) cooking bag heating, and frozen (Tibetan) hot dogs with sauce on the surface after heating. The manufacture and sale of cold food, raw food and self-made drinks do not belong to the catering service items that produce lampblack, odor and waste gas.