Huaxia, also known as "Hua", "Xia" or "Zhuxia", etc. The word "Huaxia" was first seen in "Shangshu·Zhoushu·Wucheng": "Huaxia is barbaric and will not lead others." From an archaeological point of view, the concept of Huaxia is related to Yangshao culture.
Some people also think that "Xia" is named after the Xia River (i.e. Han River). In ancient books, "Hua" and "Xia" are regarded as the Central Plains, and the four directions are called "Yiman Rongdi". Hua and Xia used to be interchangeable, and the two words are tautological. Hua means Xia. "Zhonghua" is also called "Zhongxia".
For example, Confucius said in the 10th year of Dinggong in "Zuo Zhuan": "If the descendants do not seek Xia, the barbarians will not disrupt China." The "Hua" here is also "Xia". Confucius regarded "Xia" and "Hua" as synonyms.
About the time when "Shang Shu" was compiled, "Hua" and "Xia" began to be used together in ancient Chinese books, collectively called "Hua Xia".
Kong Yingda, a Confucian scholar of the Tang Dynasty, said in "Chun Qiu Zuo Zhuan Zhengyi": "China has great etiquette, so it is called Xia; it has the beauty of uniforms and seals, so it is called Hua." This means that because China is a country of etiquette, it is called Hua. It is called "Xia", and "Xia" means elegance; Chinese people's clothes are very beautiful, pretending to be "hua". The word Huaxia is not only geographical, but also has a deeper value in terms of cultural deposits.