Chun-fen (noun) 春分 (Chinese): Spring equinox (4th solar term), (March equinox), literally in Chinese “chun” 春 = spring, “fen” 分 = half.
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In ancient Chinese calendar, Chun-fen is the 4th solar term of the 24 Chinese solar terms ( Jie-chi 节气 ). Chun-fen begins when the Sun reaches the celestial longitude of 0° and ends when Chun-fen reaches the longitude of 15°. In the Gregorian calendar, Chun-fen usually begins around March 21th and ends around April 4th (April 5th East Asia time). Chun-fen more often refers in particular to the day when the Sun is exactly at the celestial longitude of 0°. During Chun-fen the Sun is at the equator dividing the Earth equally into southern and northern hemispheres. Chun-fen refers to the day and night divided by half day and half night, each of which is 12 hours. Chun-fen is in between Li-chun (beginning of Spring) and Li-xia (start of Summer). Therefore, Chun-fen is in in the middle of the Spring which lasts for three months. In ancient China, Chun-fen was also divided into three periods: in the first period 元鸟至 , the swallows would fly from the south. During the second 雷乃发声; there would be lots of thunder and in the third period 始电; you will see lightning when raining. The vernal equinox records in the Chinese ancient calendar: “The sun entered the equator three days before the spring equinox.”
Natural flowers, trees, birds and animals all live and move according to a certain season. Their activities are closely related to climate change. Each period 候 in a Jie-qi 节气 is associated with a flower letter breeze 花信风. During Chun-fen, the first period is associated with Begonia 海棠, second period with pear blossoms 梨花, and third period with Magnolia 木兰. In addition to these three flowers, there are peach blossoms, spring jasmine flowers, rapeseed flowers, and lilac flowers that still bloom in the spring equinox (chun-fen).
Since ancient times, Chun-fen has been a solar term for agricultural purposes in the lunar calendar. Chun-fen is still remembered and celebrated as a Chinese traditional festival.
