Catch a thief means a thief, a thief, a thief and a pair of thieves.

1, the interpretation of metaphor dealing with right and wrong should be based on facts.

2. The source is Song Hu Taichu's "Preface of Tent Curtain Governing Prison": "There is a saying:' Catch thieves and stolen goods, catch rape and catch both.' Although this is slang, it is very famous. "

3. Common idioms.

4. Idioms are used as objects, attributes and clauses; Used to do things.

5. The synonym is to catch a thief and catch both.