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"