1, the capital refers to the capital, which is the name of the Chinese character cultural circle, or a city with the same important position as the capital. It was common in ancient times and had the same meaning as the national capital and capital.

2. Capital of the past dynasties: the capital of the Sui Dynasty was Daxing (now Xi 'an, Shaanxi) and later moved to Luoyang (now Luoyang, Henan). Chang 'an, Tang Dou (now Xi, Shaanxi), Luoyang, Henan (now Luoyang, Henan). Luoyang, the capital of Wuzhou (now Luoyang, Henan), etc.