戴红领巾装嫩
[dài hóng lĭng jīn zhuāng nèn]
Wearing the red scarf and pretending to be innocent. The red scarf (红领巾) represents China's Young Pioneers organization. The term 'pretending to be innocent' suggests acting younger or purer than one actually is, often with a hint of self-deprecating humor. It reflects an interesting contrast between a cultural emblem of youth and maturity in Chinese society.