The Summer Solstice is a perfect convergence of astronomy and humanity.

"Zhi means extreme" — on the Summer Solstice, the sun’s altitude at noon reaches its highest point of the year in the Northern Hemisphere. In Beijing, shadows at noon are only 0.3 times the object’s height. In Mohe, China's northernmost city, daylight lasts nearly 17 hours, creating a rare “white night” phenomenon. As early as the Shang and Zhou dynasties, ancient Chinese accurately measured these events with gnomons, using them as the foundation for calendar development.

The Summer Solstice marks a crucial turning point between yin and yang.

From this day onward, yang energy (active, warm) begins to decline, and yin energy (passive, cool) starts to rise. This understanding has given rise to rich cultural traditions: land-offering rituals in the Zhou Dynasty, solstice holidays in the Han Dynasty, and today's wellness practice of "treating winter diseases in summer". Each reflects the time-honored Chinese wisdom of living in harmony with nature.

The Summer Solstice encodes the seasonal rhythms of agrarian civilization.

The proverb “After the Summer Solstice, three Geng days lead into dog days” marks a critical agricultural phase. The Jianghuai region(area between Changjiang and Huaihe) enters peak monsoon season, while northern China experiences frequent thunderstorms. A rural saying goes, “Fail to weed by Summer Solstice, and it’s like raising a venomous snake.” It emphasizes the urgency of fieldwork. Today, drones monitor farmland drainage, and smart irrigation systems regulate water levels—fusing ancient wisdom with modern technology.

May everyone find their own rhythm of growth in the sunlight of the solstice and reap a life as bountiful as midsummer. As UNESCO aptly stated, “The 24 solar terms are valubale wisdom that the Chinese people offer to the world—bridging the past and inspiring the future.”