|Overview: Chinese Wall|
An ethical and legal barrier that is set up to eliminate conflict of interest.
The term originates in the United States with efforts to strengthen securities industry regulations after the Wall Street Crash of 1929. The term is an analogy to the Great Wall of China and isn't intended to have ethnic or national connotations.
A Chinese wall may be purely ethical in nature or may be a legal requirement. In many cases, it is supported by information and physical security.