The predecessor of the Han nationality is basically Yan Emperor. The two major ethnic groups left by Huangdi are called "Hua Xia" (Some people think that "Hua Xia" is the people living in the Central Plains. "Xia, Da Ye. There is a great etiquette; there is an article that says "Huaxia is the predecessor of the Han nationality. The concept of the Han nationality originated from the" Five Huhu and the Sixteen Kingdoms ", and it was fixed later. Therefore," Huaxia is used to replace the Han nationality "in the book. The word" China "originated from the" Ho Zun "(unearthed in Baoji in the 1960s)" Yu Qizhai China ". What is the correct interpretation of "China" in the last sentence of this text? ['The center of Chinese life in the Central Plains area.', 'The residence of the Chinese people.', 'Much of China Today.', 'Today Mainland China.']