歪门邪道

Explanation: Refers to the improper avenue. Metaphor is also a bad idea. 　　Usage: Joint type; as subject, object, attribute; containing derogatory 　　Examples: We want to make everyone rich, but must not engage in dishonest. Thesaurus:  contagion, gentleman on the beam, burglar thief, Jiminggoudao, heretical sect, Shuqiegoudao, Shuqiegoutou, heretical sect, crooked means, Xiemowaidao Antonym Group:  the one and only way; the only proper course to take, inevitable course, The only way, facility Door, Zhongnanzhen beeline