以肉喂虎
      Explanation: Metaphor die in vain.
      Source: Han Xun Yue "Ji Han Ji Gaozu a" Jin Fu Qin, such as the meat to feed the tiger, when any benefits too! "
      Examples: Time when (Deng when) level officials in the small light of the Monte, said, 'He Shuzi He Nengwei? For ~ ear this! '★ "Lu Meng Chuan Wu of the Three Kingdoms"