Sinographs for "tea"
It is common for Chinese to claim that their ancestors have been drinking tea for five thousand years, as with so many other aspects of their culture. I always had my doubts about that supposed hoary antiquity, and after many years of research, Erling Hoh and I wrote a book on the subject titled The True History of Tea (Thames & Hudson, 2009) in which we showed that tea-drinking did not become common in the East Asian Heartland until after the mid-8th century AD, when Lu Yu (733-804) wrote his groundbreaking Classic of Tea (ca. 760-762) describing and legitimizing the infusion.
Since people in the Chinese heartland were not regularly drinking Camellia sinensis qua tea before the mid-8th century, I long suspected that they did not have a Sinograph for tea (MSM chá) either. Rather, based on my reading of texts and inscriptions dating from the 7th c. AD and earlier, I hypothesized that the character now used for "tea", namely chá 茶, was a sort of rebranding (by removing one tiny horizontal stroke) of another character, tú 荼 ("bitter vegetable").
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