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Archaeological finding traces Chinese tea culture back to 400 BC

An archaeological team from Shandong University, east China's Shandong Province, has found the earliest known tea remains in the world that date back about 2,400 years.

Archaeological finding traces Chinese tea culture back to 400 BC
Small bowl containing tea residue found in Tomb No. 1 at Xigang [Credit: Jiang et al., 2021]

The discovery traced physical evidence of the origin of China's tea culture back to the early stage of the Warring States Period (475-221 BC), roughly between 453 BC and 410 BC. It extends the age of the country's popular beverage, as suggested by previous studies, by more than 300 years.

The tea samples, which have proved to be residues of brewed tea, were excavated from ancient tombs in Zoucheng, Jining City, Shandong Province.

Archaeological finding traces Chinese tea culture back to 400 BC
2,400-year-old tea leaf residue from the bowl [Credit: Jiang et al., 2021]

From August to December 2018, the team, led by professor Wang Qing from Shandong University, conducted archaeological excavations in the ruins of an ancient city that was built in the Spring and Autumn period (770-476 BC) and the subsequent Warring States period.

The stem-and-leaf-like carbonized residues were found in an inverted porcelain bowl. Subsequent data showed that the caffeine and theanine content in the residues was low or even absent. Since these two substances are easily soluble in water, the researchers concluded that the unearthed tea samples were dregs left by ancient people after boiling.

The findings were published in the journal Scientific Reports.

Source: Xinhua News Agency [January 12, 2022]

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