A species of dolichos or bean, that had been sown between the drills of the Holcus, or tall millet, was now in flower.
"Travels in China, Containing Descriptions, Observations, and Comparisons, Made and Collected in the Course of a Short Residence at the Imperial Palace of Yuen-Min-Yuen, and on a Subsequent Journey through the Country from Pekin to Canton"
John Barrow
Instead of rice one of the millets is sometimes sown as an after-crop, this requiring very little water, or the Cadjan, a species of dolichos or small bean, for oil, requiring still less.
"Travels in China, Containing Descriptions, Observations, and Comparisons, Made and Collected in the Course of a Short Residence at the Imperial Palace of Yuen-Min-Yuen, and on a Subsequent Journey through the Country from Pekin to Canton"
John Barrow