齊民要術 [齐－－术]

Jyutping cai4 man4 jiu3 seot6
Pinyin qí mín yào shù

Definitions (CC-CEDICT)

Essential skill to benefit the people, sixth century encyclopedia of agricultural knowledge by Jia Sixie 賈思勰|贾思勰[Jia3 Si1 xie2]