Among the traditional buildings in China, nothing attracts foreigners more than caves on the Loess Plateau. In Red Star over China, Si Nuo gave a detailed description of caves. Dr Bethune called the cave dwelling "the best air defense operating room in the world". When westerners study the positive role of caves in getting rid of the wild state, the Chinese nation has lived in caves for four or five thousand years. (Banpo Culture) My understanding of caves was inspired by the depiction of Yan 'an in movies and oil paintings. And I always thought that only northern Shaanxi had caves. Knowing that the great man wrote "On protracted war" in the cave, knowing that Kangda is a "cave university" ... Shanxi people told me that the "authentic root vein" of China cave is in Shanxi! Therefore, when I entered the Luliang area and saw the first cave with my own eyes for the first time in my life, I couldn't help crying out in surprise-that scene must be no less than my mother's surprise when she first fed me ice cream! In the next few days, from rows of spectacular caves to sleeping on the kang in my hometown caves, with the deepening of my understanding of caves, I have another unforgettable thing in my life memory. ...