Since the ancients had no fireproof utensils, food to be boiled was placed in a wooden bowl with water, and red - hot stones were dropped into it.
Karena orang zaman dahulu tidak mempunyai perabot tahan api, makanan yang akan direbus ditaruh di dalam sebuah mangkuk kayu yang berisi air, dan batu yang merah membara dicemplungkan ke dalamnya.