So, for example, a social network between people within the city grows in a mathematical relationship with the increase in the size and quality of infrastructure, such as roads, power lines and the like.
Some scenes that may be unfamiliar for urbanites, such as washing clothes in the river, cutting firewood in the mountains and digging cellars, are still common for some elderly people in this village, Zhang says.
City people always appear to be hurrying to get where they are going, restlessly seeking attention in a store, or elbowing others as they try to complete their shopping.