The traditional East Asian calendars divide a year into 24 solar terms (節氣). Lìchūn (pīnyīn) or Risshun (rōmaji) (Chinese and Japanese: 立春; Korean: 입춘; Vietnamese: Lập xuân; literally: "start of spring") is the 1st solar term. It begins when the Sun reaches the celestial longitude of 315° and ends when it reaches the longitude of 330°. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 315°. In the Gregorian calendar, it usually begins around February 4 and ends around February 18 (February 19 East Asia time).

Lichun signifies the beginning of spring in East Asian cultures. Chinese New Year is celebrated around this time. Farmers often celebrate the beginning of Lichun with special village events, worship and offerings to the gods and ceremonies for a blissful and prosperous new year. In China, people eat chūnbǐng (春餅) on this day.

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In the lunisolar calendar, New Year's Day might be before or after Lichun. A year without Lichun is called 無春年 (no spring year). 無春年 is also known as 寡婦年 (widow year) in northern China or 盲年 (blind year) in southern China. Marriage is believed to be unlucky in a year without Lichun.

In the Republic of China, Lichun has been Farmer's Day since 1941.

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传统的东亚日历将一年划分为24节气(節氣)。Lichūn(pīnyīn)或Risshun(rōmaji)(中国和日本:立春;韩国:입춘;越南:Lập宣,字面意思:“春天的开始”)是第一个节气。开始当太阳到达黄经315°,结束时达到330°的经度。更经常特别是指一天太阳黄经的正是315°。公历,一般在2月4日开始和结束在2月18日(2月19日东亚时间)。

立春在东亚文化中象征春天的开始。庆祝中国新年是在这个时候。农民经常庆祝立春为特殊村事件的开始,敬拜和祭神仪式幸福和繁荣的新年。在中国,人们吃chūnbǐng(春餅)在这一天。

阴阳历,元旦可能立春之前或之后。一年没有立春叫做無春年(无春年)。無春年也被称为寡婦年(寡妇年)在中国北方或盲年(盲年)在中国南部。婚姻被认为是不吉利的一年没有立春。

在中华民国,立春为自1941年以来农民的一天。