Waiting too long. "Daylily is cold" is a common saying. In Qidong County, Hunan Province, which is rich in day lilies, the last dish at the banquet is day lilies. If someone comes after the last dish is cold, they will generally be blamed by everyone, but in order not to hurt each other's face, they will say, "The day lily will get cold after waiting." With the wide use of it, we later used "daylily cool". This sentence is usually a sarcastic criticism of people who are late or things that are late, meaning that the opportunity is missed and everything is late. Sentence: I will wait for you until the day lily is cold. Why don't you know?