ㄨㄥˋㄓㄨㄥㄓㄨㄛㄅㄧㄝwèngzhōng‑zhuōbiē

瓮中捉鳖
  1. 捕捉甲魚比喻被捕對象控制 摸清發起突襲甕中捉鱉手到擒來」。

to catch a turtle in a jar (idiom)​; to set oneself an easy target, a turkey shoot