太 公 釣 魚 願 者 上 鉤

太公釣魚，願者上鉤

太公钓鱼，愿者上钩

tai4 gong1 diao4 yu2 , yuan4 zhe3 shang4 gou1

Jiang Ziya is fishing, if you want take the hook (idiom, refers to early sage 薑子牙|姜子牙 fishing with no bait and the hook above the water); to put one's head in the noose