In the beginning, people could only use fans to avoid the heat. Fans were probably the most common way to cool down in ancient times. In those days, most ordinary people had fans in their homes to cool down in the summer. Those who were well off would buy fans made of silk, and some literati calligraphers would write poems and paintings with their own or other people's fans.
During the Shang and Zhou Dynasties, people stored ice for summer from winter to summer. Shang Dynasty, it began to store ice in winter,
The original refrigerator appearance. Spring and Autumn and Warring States period, the predecessor of the refrigerator has a "primitive refrigerator" bronze ice. The bronze ice scroll is a container made of bronze and wine vessels. It could cool the wine through the ice around the wine bottle. This is also the earliest refrigerator in ancient Chinese history." The Song of Chu - Soul Calling" has this line, "Pouring dregs to freeze wine is wonderful. It means to drink wine in summer, remove the foam and then freeze it. It's cool and sweet to drink. It's very comfortable. The record is of bronze ice wine. But at that time, the cost of making bronze ice was very high, and it was only for the use of powerful people.
By the Qing Dynasty, wooden refrigerators with natural ice evolved from bronze ice. At that time, it was called "ice bucket" and "ocean bucket". This wooden refrigerator has a better heat preservation effect than the bronze ice indicator, which can effectively extend the use of natural ice. Moreover, the wooden refrigerator can not only freeze beverages, fruits and fruits, but also can cool the fresh food out of the air, reduce the indoor temperature, so as to play the role of "air conditioning".
The Tang Dynasty not only has the original refrigerator, there are specialized air-conditioned rooms. In order to avoid the summer heat, the earliest air-conditioned room appeared in the Tang Dynasty court, that is, the Tang Dynasty court specifically for the summer vacation set up a "cool palace". The cool pavilion relies mainly on some mechanical principles, the use of cold water circulation to make indoor cooling equipment.