Photo: Wikimedia Commons · CC BY 2.0
Thesis
The key words in “焙凿地深二尺阔二尺五寸长一丈上作短墙高二尺泥” are not ornament. They mark where Tang tea names, vessels and provenance meet.
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
The annotation matters less as philology than as a distinction between name and thing. 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。 Once names settle, picking, grading and trade can share a language.
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.
Ask what period this person lived in.