Chinese

		to lead; to divert (water); to guide	wolf	to enter someone's house or room
simp. and trad. (引狼入室)		引	狼	入室
Literally: “to lead a wolf to one's room”.

Idiom

引狼入室

1. to bring trouble to oneself; to expose oneself to trouble.
   • 變法變得人心惶惶，怨聲載道。居然還找日本人當顧問。這不是引狼入室，請鬼來開藥方呢？ [MSC, trad.]
     变法变得人心惶惶，怨声载道。居然还找日本人当顾问。这不是引狼入室，请鬼来开药方呢？ [MSC, simp.]
     From: The Firmament of the Pleiades

     Biànfǎ biàndé rénxīn huánghuáng, yuànshēngzǎidào. Jūrán hái zhǎo rìběnrén dāng gùwèn. Zhè bùshì yǐnlángrùshì, qǐngguǐláikāiyàofāng ne? [Pinyin]

     The administrative reform has turned public sentiment into fright that hue and cry can be heard from every corner. Yet you went to extremes to get a Japanese to serve as your adviser? Isn't this an act of leading a wolf into your chamber, inviting a ghost to write for you a medication order?