Administrative divisions of China By its political level, when a "city" is referred to, it can be a: By its actual area and population, it can be: When used in the statistical data, the word "city" may have three different meanings: It is important to specify the definition of "city" when referring to statistical data of Chinese cities, otherwise, confusion may arise. For example, Shanghai is the largest city in China by population in the urban area but is smaller than Chongqing by the population within the administration area. Before the establishment of the Qin Dynasty, China was ruled by a network of kings,
China in the Vietnam War 1962, even exceeded Soviet assistance in the same period. Thus, all these factors contributed to a closer relationship and increased the Chinese popularity among the Vietnamese population. Besides, when it comes to the reason why did the leaders in Hanoi, shortly after such a strong declaration of alliance with the Chinese, turn away from Beijing and towards Moscow, he suggests, the most important reason was the deteriorating security situation in Vietnam. From Vietnamese perspectives, in terms of the threat of escalating US intervention, the only possible and reliable ally in such a situation would be the Soviet Union. Although China