After moving eastward, Guanzhong was empty, and Qin took the opportunity to occupy Guanzhong. Why is Guanzhong empty?

The main reason is that moving the capital has taken away most of the strength. In 770 BC, Zhou Pingwang, who was only 9 years old, arrived in Luoyi unharmed under the escort of multinational forces. The Eastern Zhou Dynasty began. However, with the eastward movement of Zhou Pingwang, the population in Guanzhong area dropped sharply overnight. When Zhou Pingwang moved eastward, Guanzhong was sparsely populated and divided into three parts. First of all, before King Ping moved the capital, some prophets began to move the capital. Guo and Zheng's Wang are both surnamed Ji. They clearly saw that the Guanzhong princes could not expand their land and moved their capital for their own development.

Because the Western Zhou Dynasty was about to perish, all the governors moved away. In the heyday of Zhou Xuanwang, they began to move the capital. These vassal States need a large number of troops and population if they want to gain a foothold in the Central Plains after capital transfer, which is the primary reason for the population decline in Guanzhong. Second, when Zhou Pingwang moved the capital, he not only moved the clans and troops of the Zhou Dynasty, but also moved countless forced immigrants. When Zhou Wang Jin Dong was in charge, he couldn't leave only a small number of people. As long as it was within his sphere of influence, he wanted to take it away. In addition to the royal family, ministers, troops and slaves, ordinary people also carried out large-scale immigration.

The Zhou dynasty didn't want to leave many people and wealth to dogs. After moving eastward, the territory of the Yellow River was divided into two parts. The south bank of Luoyang basin and the north bank of Hanoi. Luoyang basin can be called Little Zhongguancun, where Luohe River and Yihe River flow. The fertile land is a good place for agriculture. There is Taihang Mountain in the north and Yellow River in the south. When the relocated households were resettled in the Zhou Dynasty, there was no problem of land cultivation. Therefore, the Zhou royal family did everything possible to seize the population and wealth in Guanzhong as much as possible.

In the third week, Zhou Pingwang moved eastward, and many princes followed him. Guanzhong was originally a place to collect surnames. However, when Zhou Pingwang moved eastward, other princes also thought that they could not resist the dog's invasion and had to move eastward. The eastward movement of Zhou Pingwang is one of the main reasons for the population decline in Guanzhong. In addition, the occupation of dogs and Rong is another reason why Guanzhong is vast and sparsely populated. After Zhou Pingwang moved eastward, many tribes were wiped out. As a result, farmland became pasture, farmers became slaves, and the population of Guanzhong decreased again.