Kao Chih-wei explains that Taiwanese farmers are in the habit of covering young garlic plants with dry rice straw, both to keep them warm and to rot down as compost to enrich the soil. The bodyguards, few of whom had any experience of farming, did not realize what was hidden under the rice straw, and began carelessly trampling across the garlic field.
高稚偉表示，台灣農民習慣用乾稻草覆蓋在未長成的蒜苗上，一則保溫，一則乾草腐爛之後也可當肥料，一開始，較少有農作經驗的侍衛沒注意到稻草下的玄機，一不小心，全踩在蒜田裡了。