Kantou, cave dwelling and heatable adobe sleeping platform come from the words "Kantou, a wasteland in Nanniwan, and a heatable adobe sleeping platform in Yan 'an", which represent the revolutionary spirit of serving the people wholeheartedly, being brave in dedicating to the revolutionary cause, self-reliance and hard struggle formed by our people in the arduous revolutionary struggle.

"Nanniwan Reclaims wasteland, Yan 'an caves warm kang" comes from Qi Nianzeng's modern poem Yan 'an I'm looking for you.

The pioneer of land reclamation in Nanniwan refers to the revolutionary spirit of self-reliance and hard struggle embodied in the mass production movement. The warm heatable adobe sleeping platform in Yan 'an cave actually refers to the close relationship between the army and the people and the party during the war years.