Introduction of grapes and alfalfa into China: a reflection on the role of Zhang Qian.

There is a prevailing legend that grapes and alfalfa were introduced to China from West Asia by Zhang Qian in 126 BC. This paper intends to show the legend to be a misconception. The three crucial documents were thoroughly examined, and the author believes he can demonstrate that it was a later traveler who actually brought these two plants to China following the trade route pioneered by Zhang Qian.