Which is hotter in ancient summer or modern summer at the same latitude?

Many people think that the more developed cities are, the more carbon dioxide is emitted, the global greenhouse effect is obvious, and it should be hotter in summer. Not really. We are at the end of the cold period, which is actually good, because we can escape from summer in many ways. In ancient times, they were in a warm period, and the summer was hot and dry, so ordinary people could not escape the heat. The ancient summer can be said to be very difficult.

In ancient times, especially before 1900, China had four warm periods. With the appearance of the warm period, thermal disasters and droughts also afflict people. "There is drought in spring and summer, and millet and wheat are withered." This happened in Zhenyuan period of Tang Dynasty. "In May, trees and grass withered, and all the springs dried up." This happened during the Jiading period of the Southern Song Dynasty. "After eight years of Qianlong, more than 10,000 people died in Beijing." This happened again during the Qianlong period. This is a terrible phenomenon. If you want food, there is no food, and if you want water, there is no water. "One hundred dollars for every drowning, and dozens of dollars for a glass of water in Jianghuai." It can be said that a glass of water is more expensive than oil.

Compared with ancient times, we now have air-conditioning fans, ice cream popsicles, water to drink and food to eat. It is rare for so many people to die of heat. Although it is really hot, the temperature we can feel is only so much. Now with the guarantee of science and technology, there is little water and food shortage in summer. In ancient times, there was no technology, no air conditioning and nothing. Although there were trees, dense forests and no cities in ancient times, it is still a question whether forests can survive in such hot weather in Chengdu, not to mention people.

The ancient heat, now people can't imagine, shake the wind and enjoy the cool, ordinary people can only do this. If conditions are better, the royal aristocrats can own an ice house. When winter comes, they will store a lot of ice cubes in the ice room for summer use. Even better, you can build a cool house in the summer resort. In ancient times, we can say that we did our best to avoid the heat. Without technology, it can only be like this.