指鹿为马 [zhǐ lù wéi mǎ]
[词典] point to a deer, call it a horse -- deliberately misrepresent; call a stag a horse -- deliberately misrepresent; call white black; deliberate deception; [例句]成语指鹿为马就是根据这个故事得来的。
This story gave rise to the idiom "Calling A Stag A Horse".