Children at a kindergarten in Beijing on Wednesday painted on eggs and tried to make eggs stand to celebrate the Chinese traditional calendar date of "Chunfen" or spring equinox. /VCG Photo

"Chunfen," falling on March 21, is also known as spring equinox or vernal equinox. The date marks the point when the sun is exactly above the equator and the night and day are of equal length. /VCG Photo

On the day, there is a unique Chinese custom of trying to get eggs to stand vertically. It is believed that if someone succeeds, he or she will have good luck all year round. /VCG Photo