Zhèxiē guānmiǎntánghuáng de guānfāng shēngmíng yǎngài bù liǎo zhēnxiàng.
These pompous official statements cannot conceal the truth.
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Literally 'crown and cap, hall and imperial' — images of official grandeur. The idiom evokes someone dressed up in regal regalia, speaking with inflated self-importance to hide their real motives.