《周礼·天官冢宰·酒正&掌次》
凌人掌管有关藏冰出冰的政令。夏历十二月，命令斩伐冰块，三倍的数量而藏入冰窖。
凌人掌冰正，岁十有二月，令斩冰，三其凌。
The ice master is responsible for the rules concerning storing and producing ice. In December of the Chinese lunar calendar, order the production of ice, which will be stored in an icehouse and increased threefold.