The frozen potatoes are from the movie "Changjin Lake". There is a scene in "Changjin Lake" where the soldiers all ate potatoes that were so hard that they could knock their teeth off, and even these potatoes were very precious to everyone, because potatoes were probably relatively expensive to the soldiers at that time. The food that is scarce is also a very precious food to them. They will only choose to eat it when they have no choice, because this resource is also limited. From this scene, we can see how difficult the combat environment was for the soldiers at that time. And this is actually just one of the manifestations of the difficult conditions. In this movie, there are many more real and difficult conditions that have not been filmed. Having potatoes to eat is already very good. During the war at that time, there may be many people who did not have potatoes to eat. When they were hungry, they could only choose to eat what was available, and some ate snow, tree bark, etc. These are all very real. It is a very lucky thing to be able to eat potatoes that are hard enough to knock teeth out and moldy potatoes.