Did the ancients fry peanuts in the cold season?

"Slight cold and cold, frozen into ice hockey", the cold season is the period of "three or nine days", which is called "walking on the ice in March and April". There was no refrigerator in ancient times, and it was impossible to popularize saltpeter to make ice later. Therefore, the ancients generally collected ice cubes at the coldest time of the year, stored them in the freezer, and took them out in summer. The custom of picking ice in cold weather continued from Shang and Zhou Dynasties to Ming and Qing Dynasties. The Zhou Dynasty picked ice at the beginning of the twelfth lunar month, and the Ming and Qing Dynasties picked ice before and after the Great Cold.

In ancient times, there was no ice-making technology. In ancient times, wealthy families and royal families had special ice rooms to store ice cubes. When it freezes in the cold river, they ordered people to collect ice cubes for summer use. In hot summer, ice cubes are needed to cool off the heat.