This sentence comes from "A General Statement of Warning to the World (I)". The original sentence is: "smash the jade cage and fly the colorful phoenix, remove the golden lock and let the dragon go." In Luo Guanzhong's Romance of the Three Kingdoms, Cao Mengde offered a knife, failed to assassinate Dong Zhuo, and galloped away with a similar poem. The 21st chapter of Romance of the Three Kingdoms tells that Liu Bei took the opportunity to escape from Cao Cao's control and led his troops to Xuzhou. The counselor advised Cao Cao to get him back. Cao Cao hesitated and finally let the tiger go. Original: Later generations have a poem lamenting Liu Bei's saying, "Tie the armament horse in a hurry and think about the sky." Break through the cage and escape from the tiger and leopard, unlock the golden lock and stay away from the dragon. "