Chinese Wall

Great Wall of China

any barrier that isolates a person or group, as one that hinders a free flow of information

Origin: after Chinese Wall

See Chinese Wall in American Heritage Dictionary 4

noun
A barrier, especially one that seriously hinders communication or understanding: “still believe a Chinese wall can exist between public and private selves” (Gail Sheehy).

Origin:

Origin: After the Great Wall of China

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Chinese Wall

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