C539 Yu long is an agent?

Yu Long is an agent?

In the end, Cao Zheng heard Yu Long's voice coming out of the phone, "Cao Zheng? How are you? You sent that Liu guy to investigate me today? "Hehehehe, what was the result of your investigation?"

At this moment, Cao Zheng almost spat out a mouthful of blood. What? Yu Long actually knew it was him, Cao Zheng