First, Chengdu is in the middle of Sichuan and Chongqing is on the right. Moreover, Chengdu has developed so well that water resources, transportation and population are definitely better than Chongqing. As an imperial capital, Chengdu is really better.
? There is also this geographical location, because in the middle, it is far from the capitals of Wu and Wei, and it is easy to defend but difficult to attack, because the Shu Road is difficult to walk. There is also fertile land where people can live well. There is no threat to the southwest, because part of Yunnan is also Shu, and going abroad is other countries. Of course, the best thing is that soldiers have money. These are the reasons why the affiliated countries should build their capital in Chengdu.
? Taking Chongqing as an example, Chongqing has become a municipality directly under the central government since 1997. It used to be a part of Shu. It is located in the east of Shu, near Wu. It is a foolish decision and impossible to locate the capital near the enemy country. Although Chongqing can be independent, of course, it has its advantages, but in the period of the tripartite confrontation, Chongqing's geographical location does not support it to become the capital of a country. The conditions for building a capital are not only economy and terrain, but also political personnel and geographical location. You can't just hand over your capital and send it to the border of neighboring countries.
? ? There is also Chengdu, which is a basin as a whole, with plenty of water and sunshine, which is very suitable for people to live in. The capital of a country, of course, must have advantages in all aspects. Not only can you live safely, but also have the function of ensuring your own safety. Chengdu is an excellent example. So it was chosen as the capital for these reasons.