胆小如鼷

Explanation: See "timid as a mouse." 　　Source: "Weishu Ru Yin Chuan Wang Godsend" words with Baishe, bile, if mice. " 　　Examples: Central afraid of "harp" before the mind, really ~, in fact, harmless. ★ Lu Xun's "Letters To Zhaojia Bi"