January is the first day of the lunar calendar.

According to Baidu Encyclopedia, the first day of the first lunar month is usually called the first lunar month, so it is also called January, marking the end of the old year and the beginning of the new year.

January, the first day of the Lunar New Year, is also a traditional festival in China. On this day, there are many traditional folk activities in China, including posting Spring Festival couplets and door gods and setting off firecrackers on New Year's Eve.