《礼记·月令》
其做法是把来粗推入土里，天子推三下，公推五下，卿和诸侯推九下。
天子三推，三公五推，卿诸侯九推。
The method was to push the hoe into the ground, with the emperor pushing three times, the dukes pushing five times, and the ministers and feudal lords pushing nine times.