When did the earliest sesame oil appear?

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Sesame oil is sesame oil.

Sesame used to be called flax.

The history teacher said that sesame originated in Africa, then was introduced to India, and was introduced to China when Zhang Qian went to the Western Ocean in the Western Han Dynasty.

In biology class, the teacher said that sesame originated in Yunnan-Guizhou Plateau. Evidence: The seeds of ancient sesame were found in the Neolithic site in Qianshanyang, Huzhou City, Zhejiang Province (more than 4,700 years ago, belonging to Liangzhu culture) and the prehistoric site in Shuitianfan, Hangzhou (about 5,000 years ago, belonging to the early Liangzhu culture).

According to "The History of the Three Kingdoms Wei Zhi", "When Sun Quan arrived in Hefei New City, Man Chong gathered dozens of strong men, cut them into torches, filled them with sesame oil, and set fire to thieves and attack tools from the windward." Sesame oil is used as lighting fuel here. In short, sesame oil was produced in large quantities in the Han Dynasty (at least in the early years of the Eastern Han Dynasty). However, there is no written record of how the oil pressing technology was invented and how it was operated in the early stage.

It is estimated that the production technology of sesame oil may have been introduced from Zhang Qian along with sesame.

Zhang Qian's mission to the Western Regions lasted 13 years. From the third year of Jianyuan, that is, from 138 BC to 126 BC.

The Eastern Han Dynasty was founded in 25 AD. The Battle of Hefei led by Sun Quan took place in the twentieth year of Jian 'an (2 15).

So sesame oil appeared in China about 1794-2 147 years ago.