Rhetoric, using a series of sentences with similar sentence components or structures to explain what is said, indicating the focus and depth. For example, "The Long March is the first time in history, the Long March is a manifesto, the Long March is a propaganda team, and the Long March is a seeder."
Hebei is in the north of the Yellow River, and Henan is in the south of the Yellow River. However, the lower reaches of the Yellow River often changed in ancient times, so there will be differences in different periods. The Central Plains, located in the center of China's territory, refers to the middle and lower reaches of the Yellow River with Heluo area as the center, which is equivalent to Henan Province and its adjacent areas, including southeastern Shanxi, southern Hebei, western Shandong, northwestern Anhui, northern Jiangsu and other large areas. The Central Plains, which originally meant "Yuan Ye under heaven", is the birthplace of Chinese civilization, the cradle of the Chinese nation, the ancestral home of the Han nationality and regarded as the center of the world. The Central Plains is also called Middle Earth, Middle Earth and Midsummer. With the great integration of the Chinese nation and the expansion of the Central Plains civilization, the Central Plains region has spread to this day. The Chinese nation with relatively advanced culture calls itself China, which is different from Siyi. With the spread of Central Plains culture, some areas that were still four barbarians in Xia and Shang Dynasties have been included in the Central Plains cultural area.