Start of Summer — 立夏

Start of Summer marks the official beginning of the hottest season. Unlike the dramatic solstice that comes later, this term is about the shift in quality: the air thickens, the light extends, and the pace of biological activity reaches its annual peak.

The transition from spring is decisive. Where Grain Rain was about receiving nourishment, Start of Summer is about managing abundance. Growth is no longer gentle — it is aggressive. Plants that were seedlings in April are now waist-high. The work of the season shifts from planting to maintenance: watering, mulching, pest watching, harvest timing.

In traditional practice, summer is associated with the heart — not just the physical organ but the capacity for joy, connection, and outward expression. Practices emphasize keeping the chest open without overheating the body. Foods shift decisively toward cooling ingredients: cucumber, leafy greens, light preparations. The emphasis is on sustaining energy through the long, hot days rather than building it.

The practices that match this association are small and precise. A Heart-Opening Morning Stretch — slow chest expansion with the breath — establishes openness for the day without generating heat. An Evening Cooling Breath, practiced as the sun drops, lowers body temperature deliberately after the day’s accumulation. The principle behind both is pacing rather than pushing: expansion is natural at Start of Summer, but unmanaged it becomes exhaustion. Preserving inner coolness is physiological, not metaphorical — it is the difference between a summer that builds you and one that burns you.

This term points toward Grain Full, when crops will begin to swell, and the heat will intensify further. The body now benefits from establishing summer rhythms — early morning activity, midday rest, evening cool-down — that will carry through the season.

The natural world announces the shift with a full sensory chorus. Daytime temperatures now exceed 20°C across most of eastern China, and in southern regions the first cicadas begin their call — proof that soil temperature has crossed 18°C, a threshold the loudest summer insects wait for. Around Jiangnan, frog chorusing at dusk reaches peak volume near the paddies, and the first fireflies appear at woodland edges 30-60 minutes after sunset. Swallows feed nestlings through the day — five to seven young each — and ant colonies send out winged reproductives on mating flights. The landscape has turned from spring’s green promise to summer’s full abundance.

In the garden, the work shifts from planting to maintenance. Mulching becomes essential as soil temperatures climb — a 5 cm layer slows evaporation and keeps root zones cool. Stake and trellis the climbing crops before they collapse under their own weight. Water deeply once a week rather than shallowly every day, which prevents the uneven moisture that causes blossom-end rot in tomatoes and peppers. Work in the cool hours and let the afternoons belong to rest, a rhythm the season itself insists upon. Grain Full continues the arc into the fullness of early summer.