A nian beast is a beast in Chinese mythology. According to Chinese mythology, the nian lives under the sea or in the mountains. The Chinese character nian more usually means "year" or "new year". The earliest written sources that refer to the nian as a creature date to the early 20th century. As a result, it is unclear whether the nian creature is an authentic part of traditional folk mythology, or a part of a local oral tradition that was recorded in the early 20th century. Nian is one of the key characters in the Chinese New Year. Scholars cite it as the reason behind several practices during the celebration, such as wearing red clothing and creating noise from drums and fireworks.

Chinese New Year or the Spring Festival is a festival that celebrates the beginning of a new year on the traditional lunisolar Chinese calendar. Marking the end of winter and the beginning of spring, observances traditionally take place from Chinese New Year's Eve, the evening preceding the first day of the year, to the Lantern Festival, held on the 15th day of the year. The first day of Chinese New Year begins on the new moon that appears between 21 January and 20 February.