Snack (also known as snack and midnight snack) refers to an extra meal arranged in the evening besides three meals a day, and the time refers to the rest time (usually from 9 pm to 4 am, because 4 am is the morning tea time in Guangdong).
Everyone can be used as a verb or a noun, especially for a certain food. Midnight snack is a written language, but it is generally spoken, which is widely used in central and southern Guangdong, and it is also a written language. Snack generally refers to food at night. Snack can be food at night or very late.