idiom > Niebotunzhen
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Niebotunzhen
  Explanation: Bo: commonly known as Cork, bitter taste. Nie Bo: food Huang Bo, compared the taste of food, such as the pain of Huang Bo. Swallow Needle: The needle is swallowed, the food analogy is extremely difficult to import. Descriptions of food were hard to swallow.
  Source: TANG Kang Pian "Li Shijun": "ice until dinner, all _set_ a spoonful of the mouth, each phase ogle a long time, Bo Nie salt if swallowed needle."
No. 2
  词 目 啮檗吞针
  发 音 niè bò tūn zhēn
  释 义 檗:俗称黄柏,味苦。啮檗:食用黄檗,比喻食物之味如黄檗之苦。吞针:将针吞下,比喻食物极难入口。形容食物难以下咽。
  出 处 唐·康骈《李使君》:“及至冰餐,俱置一匙于口,各相眄良久,咸若啮檗吞针 。”