There should be no difference now. We have confused xiaoxiao and yue. Nowadays, it is more commonly said that supper tends to be a verb, while supper tends to be a noun. In ancient times, Xiao refers to the night with moon, and Ye refers to the night without moon. When there is a moon, people's emotions will be higher, so there is a saying: a spring night is worth a thousand pieces of gold. On a moonless night, people's mood tends to be negative. For example, it is said that the moon is dark and the sky is high, it is a murderous night. There is a moon on the fifteenth day of the first lunar month, so it is called the Lantern Festival, not the Lantern Festival; there is no moon on New Year's Eve, so the New Year's Eve dinner is eaten, not the New Year's Eve dinner.