莞尔笑七宗罪
[guān ĕr xiào qī zōng zuì]
The term '莞尔一笑'(wǎn ěr yī xiào) describes smiling slightly, while 'the seven deadly sins' are pride, greed, wrath, envy, lust, gluttony, sloth which derived from Catholic culture. It seems to suggest a mocking attitude toward the 'sinful', implying disdain for the human vices or expressing sarcasm towards oneself or others.