J: Ngché ng (the capital of a country) refers to the national capital, which comes from Pipa Xing written by Tang Juyi (preface). "This is the daughter of the national capital." It is a name used by Chinese cultural circles (such as China, Japan, North Korea, South Korea, Viet Nam, etc.) to refer to a national capital or a city (such as the capital) with the same important position as the national capital. It is relatively common in ancient times, which means both the national capital and the capital. Of course, a foreign capital can be called Beijing, but the capital is written and the capital is spoken, which is rarely used at ordinary times.

Yangzhai (now Yuzhou, Henan Province) was the summer capital, then moved to Yangcheng (now Dengfeng, Henan Province), Splashing _ (that is, Erlitou, now Yanshi, Luoyang, Henan Province), Anyi (now southwest of Xia County, Shanxi Province), Shangqiu (now Shangqiu, Henan Province) and Luncheng (now Shangqiu, Henan Province). Shangdubo (now Shangqiu, Henan Province), then moved west (now Zhengzhou, Henan Province), then moved west (now Luoyang, Henan Province), then moved to Xiang (now Neihuang County, Anyang, Henan Province), then moved to Yin (now Xiaotun Village, Anyang, Henan Province), and finally moved to Qi County, Hebi, Henan Province.