look pleased with oneself
Shaking one's head is a Chinese idiom. Pinyin is y á ot ó UG ǎ on ǎ o, which means shaking one's head. More description of the self satisfied, self righteous appearance.
Idiom explanation
My head is shaking. More description of the self satisfied, self righteous appearance.
Related idioms
look pleased with oneself
disappear like snow when hot water is thrown on it - rú tāng jiāo xuě