Civilization four immigrants have no circles.

The more difficult it is, the more attention should be paid to the wider cultural scope of the city, because you can't afford to raise too many cities. At this time, in order to build a city, we should not only let the city get as many additional resources as possible, such as cattle, sheep, pigs, wheat and rice, but also find more important strategic resources, such as copper, iron, horses, marble and granite, which is especially important when your country lacks corresponding resources. In addition, the city is close to the water, and the city by the river can build riverbanks and add hammers in the later stage.

Also, cities built on hills may have one more hammer than other cities, which is good, especially the capital. You can try it yourself.

The circle position given by the system may be bad. If you haven't adjusted it, the system will choose it for you by default. However, if the system evaluation is "unsuitable" nearby, there will be no circle, but the key to building a city depends on your development needs.

Typing is hard, please give points.