What is the truth of peeping at the sky with salt?

The truth of "salt looks up to the sky" is to judge whether there is a storm by whether salt makes a sound in the fire. Whether the salt block makes sound in the fire is related to the air humidity. If a storm is coming, the humidity of the salt will become high, and the salt will be wet, so there will be no sound when thrown into the fire.

The story of "peeping at the sky through salt";

The elders led the villagers to travel day and night, transporting salt to a place and replacing it with barley for the winter. That night, they camped in the wilderness and the stars shone. The elders used the method handed down by their ancestors to take out three pieces of salt and throw them into the campfire, which changed the weather in the mountains.

Everyone is waiting for the old man's "weather forecast": if you hear the "click" sound of salt in the fire, it is a sign of good weather; If there is no sound, it means that the weather is about to get worse and the wind and rain will come at any time.

The elderly look serious because salt has no sound in the fire. He thought it was unlucky and advocated that it should be done immediately after dawn. However, another young man in the clan thinks that "peeping at the sky with salt" is superstition and opposes leaving in a hurry. Who knows that the next afternoon, as expected, the situation changed suddenly, and young people were in awe of the ancient wisdom of their ancestors.