How did the people spend the hot summer in ancient times? They did not have air conditioners, fans and other wind-making tools like we live now. What about the hot summer of the ancient people? Ice is the fastest thing to cool off the heat. It can drop the hot air to a suitable temperature. Then, how did the ancients make and store ice? Jiao Bing is a traditional seasonal customs. Also known as 'Tibetan Ice'. Northern my country is hot in summer and freezes in winter, so there is a custom of storing ice in the ice cellar in winter for use in the summer. This custom originated very early. There are records in the 'Book of SongsIn ancient times, there were officials specializing in this matter, and there were 'ice wells' with ice pits. Song Gaocheng’s 'Jiyuan of Things' said: 'There are icemen in 'Zhou Li'In the 19th year of Jian'an, Cao Cao, the king of the Wei Dynasty, built this platform to store ice. It was called an ice well, so it was called an ice well. 'Song Dynasty Hui Yao' said: In the third year of Jianlong, the ice well was set up and served by the Imperial City. There were three types of ice cellars in the Qing Dynasty: Guan ice cellar, Fudi ice cellar, and merchant ice cellar. 'Shui Jing Zhu' records that in the fifteenth year of Jian'an, Cao Cao built large-scale civil engineering projects in Yecheng, Henan, and built the bronze bird, the golden tiger and the three ice wells. Let's talk about the scale of ice storage. 'The Great Qing Huidian' stated that there were 5 cellars in the Forbidden City at that time, storing 25,000 pieces of ice; there were 6 cellars in the west gate of Jingshan, containing 54,000 pieces of ice; and 3 cellars outside Deshengmen, containing 26,700 pieces of ice. Some scholars calculated based on these records that the volume of the 5000 block ice cellar is equivalent to the volume of a current five-story, four-unit residential building. This is amazing! Bing Jian Bing Jian is a container for holding ice in ancient times. The specific method is to put ice cubes in a wooden or bronze box. The function is clear, which can not only preserve food, but also distribute air-conditioning to cool the room. It was removed more than two thousand years ago. Bingjian was first made of pottery, and since the middle of the Spring and Autumn Period, bronze mirrors were popular. Bingjian can be regarded as a kind of primitive freezer. When using it, put a container full of beverages or food into it, fill the surrounding area with ice cubes, close the lid, and make a 'cold drink' soon. Frustrate cold drinks, make the shochu cooler. The two sentences in 'The Songs of the Chu: Calling the Soul' mean that drinking alcohol in summer, after drowning out the bad foam, ice it, and drinking it is refreshing and sweet, and it is really comfortable. Ice making At the end of the Tang Dynasty, artisans produced a large amount of saltpeter in the production of gunpowder. They will occasionally find that dissolving nitrite in the water will absorb a lot of heat, and it will warm the surrounding water until it freezes. Then, some skilled craftsmen began to use saltpeter to make ice. The craftsmen put the water in a container, in a larger container, put the water in the container, then put the pot on the container, and constantly put the salt shaker in the container, and put the result of the water into the ice Block. The main purpose of the ancients hiding ice was to make cold drinks in summer. In summer banquets, it is common for the court to use ice. In ancient times, wine was raw wine, and the precision of wine was low. When the summer temperature is high, it will continue to ferment and become sour. Therefore, the ministers of the royal government would drink ice wine in summer. In the Tang Dynasty, Guozhongyang was in power. In the summer, the banquet was at home. Large blocks of ice were carved into mountains and surrounded by banquets. In the days of big dogs, cotton clothes were all thinly worn, and the effect was not inferior to today's air conditioners. After the Sui and Tang Dynasties, the market began to sell cold drinks. During the Southern Song Dynasty, beverages such as 'Xue Pao Dou' and 'Xue Pao Mei' appeared on the summer market. It is said that it appeared in the Kublai Khan Palace in the Yuan Dynasty, just like ice cream frozen cheese. Later, Marco Polo introduced this food to the West. After processing and transformation, it gradually became the ice cream we see today.
