There’s a particular moment in late August that Chinese calendar-keepers have celebrated for thousands of years. The sweltering days of summer are finally loosening their grip, the air carries just a hint of coolness in the early morning, and the relentless heat begins to feel like something you can actually survive. This is Chushu (处暑), the Chinese solar term that translates to “End of Heat.”
If you’ve never heard of Chushu, you’re not alone. The Chinese solar calendar—a system of 24 seasonal markers dating back to at least the Zhou Dynasty (1046–256 BCE)—is barely known in the West, even as it shapes the daily lives of over a billion people in China and beyond. But here’s the thing: Chushu might be the most relatable solar term for American readers. It captures that exact feeling you get in late August, that cautious relief when you realize summer’s worst is actually behind you.
The Meaning of End of Heat
The word 处 (chǔ) in Chinese carries the meaning of “to stay,” “to be situated,” or more commonly in this context, “to exit” or “to bring to an end.” Combined with 暑 (shǔ), meaning heat or hot weather, Chushu literally means “the heat departs” or “summer ends.” It’s the 14th solar term in the Chinese calendar, arriving each year around August 22–24, when the sun reaches its 150th degree of celestial longitude.
Here’s what makes Chushu particularly interesting from a cultural standpoint: it’s not just about the calendar. It’s about how Chinese thinkers understood the natural world and humanity’s place within it. In traditional Chinese medicine and philosophy, this period marks a fundamental shift in qi (气), the vital energy that flows through all things. The intense, expansive Yang energy of summer—the hot, active, outward-moving force—begins to yield to the cooler, contracting Yin energy of autumn.
This isn’t some abstract concept. Walk outside in late August in most of China, and you’ll feel it. The brutal midday heat softens. The nights grow noticeably longer. The oppressive humidity that makes summer in Beijing or Shanghai so draining begins to break. Farmers historically knew this was the time when their late crops would finally mature, when the hard work of the growing season would pay off.
Of course, there’s a catch—something the Chinese call 秋老虎 (qiū lǎohǔ), or the “Autumn Tiger.” This describes the brief period of unexpectedly hot weather that sometimes returns in early September, a last gasp of summer before truly cool weather settles in. If you’ve ever experienced an Indian Summer in the United States, you know exactly what this feels like. The Chinese gave this phenomenon a wonderful name—the Autumn Tiger pounces one more time before retreating for the year.
Traditional Customs
What do people actually do during Chushu? The traditions might surprise you with their simplicity and their focus on community and nourishment.
The Duck Dinner
Perhaps the most widespread custom is eating duck. The Chinese have a saying: “Eat duck at Chushu” (处暑吃鸭), and this isn’t just folklore—there are practical reasons behind it. Duck is considered a cooling food in traditional Chinese medicine, helping to balance the body’s internal heat as the seasons change. It’s also nourishing without being too heavy, perfect for that in-between time when your body is adjusting from summer to autumn eating patterns.
Different regions have different duck preparations. In Nanjing, locals favor duck blood tofu soup and salted duck. In Sichuan, people enjoy their famous spicy boiled duck. In many families, the simplest preparation—braised duck with ginger and scallions—brings everyone together for a simple dinner that marks the season’s change.
The Three Phases of Chushu
Chinese solar terms are further divided into three hou (候), roughly corresponding to five-day periods. These describe the subtle changes happening in the natural world:
First phase (一候): Hawks start hunting. As temperatures drop, these birds of prey become more active, preparing for the cooler months ahead. This was a signal to farmers that autumn had truly arrived in the skies above.
Second phase (二候): Flowers begin to wither. The late-summer blooms that have been thriving in the heat start to fade. This isn’t sad—it’s simply the natural rhythm of the seasons, a reminder that change is woven into the fabric of nature.
Third phase (三候): The earth fills with autumn sounds. This is the poet’s phase—the gentle rustle of drying leaves, the first crickets beginning their songs, the particular quality of autumn silence that feels different from summer’s heavy quiet.
Letting Go of Summer
In some regions, Chushu is also associated with rituals of release and letting go. Because the term literally means “exiting” or “leaving” heat, some families take this as an opportunity to symbolically release their summer troubles—the discomfort, the exhaustion, the stress of surviving another scorching season. It’s a gentle spiritual practice, less dramatic than a New Year’s resolution, but perhaps more realistic.
Health Tips for Chushu
Here’s where Chushu becomes genuinely useful for modern life. The health wisdom embedded in this solar term isn’t just ancient superstition—it’s practical advice that aligns with what contemporary nutritionists and doctors often recommend as we transition from summer to fall.
Nourish the Yin
In traditional Chinese medicine, the shift from summer to autumn is a shift from Yang to Yin. Summer is all about Yang: outward energy, activity, heat, excitement. Autumn is Yin: inward energy, stillness, coolness, reflection. Your body needs support during this transition.
The Chinese recommendation is to focus on mildly sweet, neutral, and moisturizing foods during this period. This means:
Pears: Nature’s little moisture bombs. Chinese medicine has used pears for centuries to combat autumn dryness—dry skin, dry throat, dry cough. Eat them fresh, or try the traditional pear and honey dessert.
Lotus root: This quirky-looking vegetable is wonderful for lung health, which Chinese medicine considers especially vulnerable during the seasonal transition. Slice it raw into salads, or add it to soups for a satisfying crunch.
White fungus (银耳): This mushroom—sometimes called “snow fungus”—is a staple of Chinese autumn cuisine. It’s incredibly soothing, especially for dry throats, and makes a delicious soup when cooked with rock sugar and lotus seeds.
Duck: As mentioned earlier, duck is the go-to Chushu protein. It’s considered slightly cooling and is believed to nourish the Yin. A simple duck soup with ginger and scallions is both comfort food and seasonal medicine.
Adjust Your Flavor Profile
Here’s a practical tip that might change how you cook: the Chinese recommend reducing spicy foods and increasing sour foods during this period.
Summer cooking often leans toward refreshing, cool dishes. But as autumn approaches, your palate should shift. Reduce the chilies, the heavy garlic, the intense spices that can further dry out your body. Instead, add more sour elements—vinegar, lemon, sour fruits. These help your body retain moisture and prepare for the drier months ahead.
This doesn’t mean eating nothing but pickles. It’s more about a gentle recalibration. Swap that extra-spicy curry for a gently sour soup. Add a squeeze of lemon to your water. Your body will thank you.
Protect Your Respiratory Health
If there’s one practical health message from Chushu that resonates today, it’s the emphasis on respiratory health during this transition. The shift from summer’s humidity to autumn’s dryness can catch your respiratory system off-guard. Cold air itself is drying, and many people find themselves with suddenly scratchy throats, mild coughs, or sinus issues as the seasons change.
Traditional Chinese medicine emphasizes keeping the lungs strong during this period. This translates to practical steps:
Stay hydrated: This sounds obvious, but in the cooler weather, people often drink less water than in summer. Don’t fall into that trap. Your body still needs moisture, perhaps even more so as the air dries out.
Protect your neck: In Chinese culture, the back of the neck is considered particularly vulnerable to wind and cold. This maps onto modern advice—keeping your neck warm can help prevent the minor colds and sore throats that often pop up in seasonal transitions.
Mind the air quality: As you start using heating systems later in the year, indoor air can become extremely dry. Consider a humidifier, or at least keep some plants that release moisture into your home.
Embrace the Transition
Perhaps the most important health advice from Chushu is psychological: embrace the transition. The Chinese understanding of seasonal health isn’t just about what you eat or drink—it’s about how you live. Autumn is a time for slightly more sleep, for gentler exercise, for turning inward slightly after the outward activity of summer.
This doesn’t mean becoming a hermit. But it does suggest that those bright, long summer evenings might be better spent with a good book than burning energy at a late party. Your body is doing important work adjusting to a new season—give it the space to do that work well.
Conclusion
Chushu reminds us that nature doesn’t flip a switch from one season to the next. There’s an in-between time, a gentle transition, a period when summer releases its grip but autumn hasn’t fully arrived. This is the moment the Chinese have honored for millennia with their solar calendar.
As you feel those first cool mornings in late August, as the days start to shorten in ways you can actually notice, as the back-to-school sales appear and the summer vacation photos start appearing on social media—know that you’re experiencing something humans have recognized for thousands of years. The heat is passing. A new season is arriving.
Whether you try a simple duck dinner, add some pears to your shopping list, or simply take a moment to notice the quality of light changing outside your window, you’re participating in a tradition that stretches back through countless generations. That’s the beauty of solar terms like Chushu—they offer us a chance to sync our lives with natural rhythms that might otherwise pass unnoticed.
So here’s to the End of Heat. Summer’s fierce hold is breaking. A gentler, more reflective season waits just ahead. And for that, we can all be grateful.
Keywords: Chushu, End of Heat, Chinese solar terms, cooling period, respiratory health
