At this point, Ning Zhiheng suddenly remembered the rumors he had heard about Gu Zhengqing that morning, and he felt that he had found a very valuable clue.

He turned to Bian Deshou and asked, "What is Gu Zhengqing's private life like? Does he have any vices like seeking out women?"

Bian Deshou shook his head and said, "Absolutely not. Gu Zhengqing has no problem in this regard. Like other experts, he only goes between home and the decryption room every day. He never goes to brothels. Besides, our unit has a high level of secrecy and does not allow them to have frequent contact with the outside world. We have warned them many times. These experts are all enthusiastic about their work and have a very upright style in their private lives. I can guarantee that."

As the head of the decoding room, Bian Deshou paid close attention to these experts and regularly conducted investigations to keep track of their latest developments.

Yu Cheng added, "According to our investigation, Gu Zhengqing really doesn't have any problems in this regard. To be honest, apart from the woman Lao Bian mentioned before, we haven't heard of him having any mistresses outside."

Ning Zhiheng nodded, pondered for a moment, looked out the window and said calmly, "In any case, I estimate we'll know the outcome today. I hope we haven't chosen the wrong target. By the way, have you been tapping the Gu family's phones?"

The wiretapping was a tactic employed by the Telecommunications Department. Bian Deshou quickly replied, "We applied to the department this morning, and our director personally arranged it. Currently, the Gu family's phones are being wiretapped. All calls and conversations are being recorded. If Gu Zhengqing tries to contact us by phone, he won't escape our surveillance."

Ning Zhiheng nodded and said in a deep voice, "We need comprehensive surveillance. Although the chances of him contacting us by phone are very low, we can't ignore it. From now on, whenever anyone from the Gu family goes out, we must send someone to follow them, ascertain their whereabouts and destinations, and record it. Perhaps Gu Zhengqing will pass on messages through other family members, but of course, the possibility is also very low. However, we cannot be negligent or overlook anything, and we cannot let go of any detail."

"Yes!" Yu Cheng and Bian Deshou answered in unison.

Ning Zhiheng set up a surveillance network around Gu Zhengqing, waiting for Gu Zhengqing to make a move. When it was 5 p.m., Zhao Jiang reported to Ning Zhiheng: "Chief, Deputy Director Huang called. He has prepared a dinner party for you and invited you to his home for dinner tonight."

Upon hearing this, Ning Zhiheng glanced at the time and frowned. This was a crucial moment in tracking down Gu Zhengqing, and he was eager to know the results. However, Huang Xianzheng had invited him to dinner, and he absolutely could not refuse.

He then turned to look at Yu Cheng beside him, who quickly said, "Chief, you can go ahead and take care of your business. Leave the tracking to me. I'm perfectly capable of dealing with someone like this. I'll report back to you as soon as I have any results, and I promise I won't delay anything!"

Yu Cheng was now certain of Gu Zhengqing's identity and was very confident about this surveillance operation. Now that Ning Zhiheng was leaving, he could take over. If he could personally find or arrest Gu Zhengqing's superior, the achievement would be considerable. It was as if God was looking out for him!

Ning Zhiheng also believed that it would be fine to hand over the next task to Yu Cheng. After all, Yu Cheng was an experienced veteran who had a great advantage in dealing with Gu Zhengqing, a novice, as he was caught off guard.

He nodded and said, "That's good. I'll leave the rest to you. Remember, Gu Zhengqing is a novice, but his identity is special and his intelligence is of great value. His superior must be an important figure, definitely a veteran intelligence officer. When you're tracking him, be extremely careful and don't act rashly. Bring more people with you, keep the distance, and cast a wide net. Don't startle him."

"Yes, I'll mobilize my men immediately," Yu Cheng replied repeatedly.

After giving his instructions, Ning Zhiheng noticed it was getting late and left with his guards.