Low-carbon tourism gains popularity. Veteran tour guide Xiao Liu said that when he previously advised tourists to bring toothbrushes and other items, tourists often questioned whether the hotels arranged by the travel agency abroad were of too low a grade, lacking even these basic amenities. Nowadays, tourists can understand that such practices by overseas hotels are for environmental protection. It is understood that in some places in China like Jiuzhaigou, there are also hotels that do not provide disposable items, indicating that with the increasing awareness of carbon reduction and energy saving, "low-carbon" is entering mass tourism. "Low-carbon tourism" means that during tourist activities, travelers try to reduce their carbon dioxide emissions as much as possible, which is a deeper expression of eco-tourism. According to the introduction, "low-carbon tourism" includes relevant environmental protection and low-carbon policies launched by the government and travel agencies, low-carbon tourism routes, carrying eco-friendly luggage in personal travel, staying in eco-friendly hotels, choosing transportation with lower carbon dioxide emissions or even bicycles and hiking. Tourists who have traveled to Europe and America all know that before traveling, travel agencies usually remind tourists to bring toothbrushes, toothpaste, slippers and other items because many hotels abroad do not provide these items.