C742 Stabilization of the Human Heart

After returning to the company and arranging some basic affairs, Cheng Zhengyang dialed Zhang Zijian's number.

"Hello, Captain Zhang, is there any progress on the case?"

"Zhengyang, the man in black seemed to have sensed something. He did not continue using that number. Let's call him and show him that his phone is off."

"Oh, so it's like that. Then