Sān 国guó 时shí 代dài 魏wèi 国guó 的de 皇huáng 帝dì 曹cáo 睿ruì，准zhǔn 备bèi 选xuǎn 拔bá 一yī 个gè 有yǒu 才cái 能néng 的de 人rén  到dào 朝cháo 廷tíng 来lái 做zuò 官guān 。曹cáo 睿ruì 对duì 他tā 的de 大dà 臣chén 说shuō：“选xuǎn 择zé 人rén 才cái，不bù 能néng 光guāng 找zhǎo 有yǒu 虚xū 名míng 的de 人rén。虚xū 名míng 好hǎo 像xiàng 是shì 在zài  地dì 上shàng 画huà 的de一yī 块kuài 饼bǐng，只zhī 能néng 看kàn，不bù 能néng 解jiě 决jué 肚dù 子zǐ 饥jī 饿è 的de 问wèn 题tí 啊ā！”

In the Three Kingdoms Period (220-280), the king of the Wei, Cao Rui, wanted to select a very capable man to work for him. He said to his ministers: 'When choosing a talented person, always beware of one with a false reputation. A false reputation is just like a picture of a cake; it can' t relieve hunger.'

后Hòu 来lái 人rén 们men 就jiù 用yòng “ 画huà 饼bǐng 充chōng 饥jī ”  这zhè 个gè 成chéng 语yǔ 比bǐ 喻yù 用yòng 空kōng 想xiǎng 安ān 慰wèi 自zì 己jǐ，不bù 能néng 解jiě 决jué 实shí 际jì 问wèn 题tí。