Summer Solstice is the tenth solar term in the twenty-four solar cycle, usually occurring on June 21st or 22nd annually. At this time, the sun reaches the celestial longitude of 90° and directly shines on the Tropic of Cancer, making the day longest and night shortest in the Northern Hemisphere, hence the name “Summer Solstice.” It marks the formal arrival of midsummer, as nature enters a peak phase of “extreme yang, all things flourishing.” In terms of phenology, Summer Solstice presents distinct changes described as “deer shed their antlers, cicadas begin to sing, and pinellia grows.” In traditional agrarian civilization, this solar term signals the busy peak of summer harvest and planting. The farming proverb states, “If you don’t weed the roots of crops at Summer Solstice, it’s like raising a viper,” emphasizing the critical importance of field management.
Historically, Summer Solstice, with its transitional nature of “extreme yang giving rise to yin,” nurtured rich customs integrating rituals, wellness, and summer leisure. Since ancient times, the “Summer Solstice Earth Sacrifice” was an official rite, where imperial courts held grand ceremonies to pray for favorable weather and national peace. Among the people, the custom of “eating noodles at Summer Solstice” was widespread—new wheat had just been harvested, and a bowl of cold or hot noodles was both a taste of the new crop and a seasonal delight, accompanied by the saying, “After Summer Solstice noodles, each day shortens by a thread.” Additionally, women exchanged fans, powders, and other items to cool off and escape the heat, while games like “weighing people” and “fighting eggs” added playful cheer to the hot season. These customs not only followed the cosmic rule of yang turning to yin but also reflected the wisdom of seeking coolness amid heat and leisure amid busyness.
By Yuan Ruichen
