刀头舔蜜

Explanation: Licking: tongue contact with something or get something. Analogy less do more harm than benefit. Also refers to greedy lust, regardless of life. 　　Source: "Buddha 四十二章经" The Buddha said to a man Choi color, for example, the blade of the honey greedy children, less than a fresh sweet beauty, then there is the risk of cutting the tongue also. "