Field Guide · Heaven + Man
Light shade and shelter that read the sun and wind before they spend a single nail.
A micro-structure is a small, light build — a shade screen, a windbreak, a cold-frame lean-to, a trellis roof — that does a full-size job with a fraction of the materials, because it works with the site instead of against it. The two forces it reads are the sun's seasonal path (Heaven) and the prevailing wind (Heaven's breath over the land). Get those two right and the structure almost builds itself.
Prevailing wind in this region runs from the east and southeast through the warm months, shifting with fronts in winter. A windbreak is not a wall — a solid wall creates turbulence on the lee side. A permeable screen (40–60% porosity — slats, netting, or a hedge) slows the wind and drops the chill or drying effect across 10–15 times its own height. Place it upwind of the bed or door, not around it.
Four corner posts + crossbars + removable slat roof. East–west orientation, slats pitched to the summer noon angle. In winter, lift the slats off and store them — the same frame becomes a cold-frame support or trellis.
Materials: pressure-free posts, 2×4 crossbars, scrap slats — all reusable. Man's craft: keep the joinery simple so the frame can be re-dressed each season.
Posts on the upwind edge, 40–60% porous infill (slats, pallet slats, or evergreen hedge). Protects tender beds and the sitting area without stealing light or making turbulence.
Place at 10–15× the bed height upwind; leave gaps at ground level so cold air drains instead of pooling.
A single sloped roof facing south, open on the sunny side, closed on the north and windward sides. Winter sun pours in and heats the mass (stone, water barrels, soil); summer sun, riding higher, is shaded by the same overhang. Seed-starting shelf, tool nook, or cold-frame all fit under one roof.
The classic passive-solar geometry — overhang depth ≈ 0.5× the wall height keeps winter sun in, summer sun out.
Before building, spend one season watching: note where the sun lands at each solstice, where the wind bites, where water collects. The structure you build after a year of watching will be half the size and twice the use of the one you build from a drawing. Heaven and Earth answer first; Man's craft is to listen, then build.
The Heaven + Man pillar of the San Cai Framework. Tools and materials: see the Wu Xing Tool Matrix.