gourmet tourism service. Traveling around the tip of the tongue is a kind of food tourism service. Usually, professional tour guides lead tourists to different places to taste local food and special dishes. The purpose of this service is to let tourists experience the local customs, understand the local culture and history, and feel the local characteristics and charm through the taste of food. The tour around the tip of the tongue usually includes itinerary planning, catering arrangement and tour guide explanation service, which allows visitors to deeply understand the food culture of a place in a short time. The tip of the tongue refers to the front end of the movable part of the first 2/3 of the tongue body. The tip of the tongue contains fungiform papillae of taste buds, so it has taste function. The tip of the tongue, the front part of the tongue.