Once upon a time, a fool went to a friend's house to be a guest, and his friend invited him to dinner. After he tasted several dishes, he found the taste too light to swallow. The friend immediately added some salt to the dish and asked him to try it again. Sure enough, these dishes taste very delicious after adding salt, which greatly increased his appetite.
The fool thought to himself, "these dishes are tasteless when they are not salted, but they are so delicious just because they are salted." If I eat more salt, don't they taste better? "
So, after the fool came home, he ate nothing and tried to eat salt on an empty stomach all day. As a result, he not only didn't eat delicious food, but also spoiled his normal taste.