Chapter II · The Implements · Section 8: A modern tea-science reading — reading “焙凿地深二尺阔二尺五寸长一丈上作短墙高二尺泥”

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Thesis

Read through modern tea science, “焙凿地深二尺阔二尺五寸长一丈上作短墙高二尺泥” is not a lab result but a set of variables: cultivar, soil, light and plucking standard.

Text

“The bei drying-pit is dug two feet deep, two and a half feet wide, and one zhang long. Above it a low wall two feet high is built and plastered with clay.”

Context

焙：焙茶的地炉。挖地深二尺、宽二尺五寸、长一丈，上砌二尺高的矮墙，用泥抹平。

Evidence

• Collation: 各本一致。吴觉农注：焙为地炉式烘干设施，与今云南烤茶、武夷炭焙异曲同工。
• Existing readings: 吴觉农指出唐代"焙"是炭火地炉，用于初焙茶饼；"凿地深二尺"保温聚热，是古代"焙茶房"的雏形，后世烘青、焙火皆源于此。

Analysis

Modern tea science would split “焙凿地深二尺阔二尺五寸长一丈上作短墙高二尺泥” into cultivar, soil, light and plucking variables. 吴觉农指出唐代"焙"是炭火地炉，用于初焙茶饼；"凿地深二尺"保温聚热，是古代"焙茶房"的雏形，后世烘青、焙火皆源于此。 They remain testable, but only with their conditions attached.

Conclusion

The section does not give a universal rule. It demonstrates a method: read the text, the annotation and the Tang context together before making a modern claim.

Source: The Classic of Tea, Chapter II · The Implements, section 8; the original is in the public domain.

A maker reads “焙凿地深二尺阔二尺五寸长一丈上作短墙高二尺泥” through weather and soil first. 焙：焙茶的地炉。挖地深二尺、宽二尺五寸、长一丈，上砌二尺高的矮墙，用泥抹平。 That is not far from how we judge a mountain and a picking window today.

The vessel is not background. 焙：焙茶的地炉。挖地深二尺、宽二尺五寸、长一丈，上砌二尺高的矮墙，用泥抹平。 The same leaf in a different bowl, grinder or sieve changes aroma and texture; vessel and tea are defined together.

Water and fire magnify the difference. The same leaf at a higher temperature or a longer steep changes the sweet-bitter balance; the text only becomes operational at the brewing stage.