Fish sold in Northeast China are directly watered and hung with ice to keep fresh. How cold is the local weather?

There is a very popular video on the Internet. A fishmonger in the northeast hung the fish outside, poured some water on the surface, and formed a kind of hanging ice on the surface of the fish, thus completing the preservation of the fish. After the video was sent out, it attracted everyone's attention, and everyone always felt amazing about this phenomenon. This happened in Jiamusi, Heilongjiang. Generally speaking, the local temperature is about 20 degrees below zero. In some extremely cold weather, it may reach about MINUS 30 degrees, which is common for local people. And I have experienced this kind of cold.

When I was a child, my parents took me to visit relatives in Jiamusi, Heilongjiang, which happened to be in the middle of winter. After arriving at relatives' home, there is a very flat and wide land behind, which is usually used to grow crops or raise cattle. However, young and ignorant, I pushed open the backyard door and ran to this land. However, due to the heavy snow two days ago, Jiamusi, where it snowed, was very cold. At that time, the temperature should be around MINUS 30 degrees. I wore thick clothes and trudged through the thick snow. But because it is too small and its legs are too short, it is gradually submerged by heavy snow. I was trapped in the snowdrift and couldn't get out, so I lay in the snowdrift and cried for about 20 minutes before my family found me and saved me. But that night, I had a fever and a cold. Even if you go to the hospital for an injection to reduce your fever, it's still useless. Even in the snowdrift, the overall time is only about half an hour, which can freeze to the point of high fever. This shows how cold the local weather is.

Moreover, after the local winter, the meat bought by people is generally not kept in the refrigerator, but buried in the snow. The outside is equivalent to a large natural refrigerator, and sometimes the cooling effect is more useful than the refrigerator. Burying in a place with the sun behind it can save a whole winter. If you want to drink ice water, you can just bury the drink in the snow and freeze it for two or three hours before taking it out. You will find that the drinks in the bottle are frozen.

To sum up, you should be able to see how cold the local weather is. My description is really not exaggerated. If you don't believe me, you can go to Jiamusi, Heilongjiang to experience it for yourself, but the friendship reminds friends in the south to wear more clothes when they come to this place, otherwise it will really be untenable.