Simple outside and clear inside
It is a Chinese idiom. Pinyin is w à Iji à NN è im í ng, which means simple on the surface but clear on the inside. From the romance of the Three Kingdoms.
The origin of Idioms
The 18th chapter of romance of the Three Kingdoms by Luo Guanzhong in Ming Dynasty: "Shao is lenient outside and taboo inside, he has many relatives, his father is simple outside and clear inside, and he is talented in employing people. This is a victory."
Idiom usage
Used as a predicate or attributive.
Simple outside and clear inside
a vast upsurge of public opinion and feeling - qún qíng dǐng fèi
expect the reality to correspond to the name - lǎn míng zé shí
Taking advantage of public interests - jiè gōng xíng sī
the few are no match for the many - sì bù niù liù