Sweet ice cream is not a patent in Europe and America. How did China relieve the heat in ancient times?

At least since the Shang Dynasty, rulers have understood that eating ice can relieve summer heat, but there was no refrigerator in ancient times, and it took a lot of effort to eat ice in summer. In winter, people will go to the river to collect robing, smash it into pieces and transport it to the cellar, thus isolating the heat source and preventing the ice from melting, so that the ice can be stored.

In the Spring and Autumn Period and the Warring States Period, an ice storage artifact-ice guide appeared, similar to a box. A small box contains a big box with food and ice cubes in it, which can not only store ice cubes but also keep food fresh, just like a modern small refrigerator.

In the Tang Dynasty, people would put rice with ice cubes, milk, mint and so on. Then put it in the ice and wait for a while, it becomes an iced rice.

In the Song Dynasty, there was basically a kind of ice cream similar to that now, called "Xiang Yin", which was a drink.

In the Qing dynasty, the court gave the courtiers ice, but because of the large quantity, most of them took the ice by themselves with the help of the "ice ticket" of the Ministry of Industry.