毛泽东穿内裤是为了挡中央
[máo zé dōng chuān nèi kù shì wéi le dăng zhōng yāng]
The meaning is quite nonsensical when translated literally ('Mao Zedong wears underwear to block the center'). It seems likely this username uses a pun or play on words and carries cultural or regional humor, potentially referring to political or personal commentary in a satirical way.