When did the name Zhongyuan appear?

The Book of Songs "The Book of Songs Xiaoya": "Where the lacquer falls, the land where the son of heaven lives. Far away, the vast land is rich. " (Qi is the name of Ershui in the north of Guanzhong, from which the earliest "Central Plains" originated)

Many famous scholars in history have discussed the concept of the Central Plains, such as Lu You: "To govern the Central Plains, we must start from Chang 'an in Guanzhong, and to take Chang 'an, we must start from Longyou." Miao Xiyong's Buried Wings: "Guanzhong is the ridge of the world and the leader of the Central Plains."

Most influential Central Plains dynasties in history established their capitals here, such as Zhou, Qin, Han, Sui and Tang Dynasties.

Of course, today's concept of the Central Plains is different from that of ancient times. 1987, Mr. Yan Wenming put forward the pattern of "double petals", pointing out that "the most famous prehistoric cultural pattern is the Central Plains Cultural District, which covers almost the whole territory of Shaanxi, Shanxi, Hebei and Henan, centering on the Weihe River basin and the adjacent areas of Shanxi, Shaanxi and Henan".