"Thank you for your cooperation, before this case is solved, please don't go out of City A, this is not to suspect you, it's just a normal procedure for us." Bai Yaqing smiled and said to the head of the design department.

The head of the design department is also a wise woman, so she naturally understands this.

"Okay, what's there to call me on this number." The head of the design department gave her a business card.

"Yes, okay."

Xiao Zhao's emotions have been comforted, but his good friend in this company died like this, disappeared for a few days, and said goodbye like this, which is still a little difficult to accept......

"Ms. Xiao Zhao."

"Huh?"

"I'm sorry about your friend, I want to know, when was the last time you saw Kong Ling?"

"Last ......" Xiao Zhao's mind was very messy now, and he couldn't think of it at all, so he looked at Ah Feng for help.

"Xiao Zhao, your friend was killed by someone now, in order to let her rest in peace, you should think about it." Ah Feng gently coaxed Xiao Zhao.

Bai Yaqing couldn't help but shudder, how could she feel so cold, the rhythm of abusing dogs?

"I ......"

"Ms. Xiao Zhao, please think about it, we need clues to solve the case."

Xiao Zhao thought about it for a while and said, "It's when she works overtime." ”

"Overtime?" Is it really the same as she reasoned?

"Well, three days ago, there were some problems with Ling's design plan, because it was going to be handed in the next day, so she stayed and worked overtime......"

The design plan of that day was the first time that Kong Lingjin Company was responsible for the design plan in a month, no, it should be said that he participated. As a deputy, she was assigned the task of reviewing the design plan by the main person in charge, which is undoubtedly an affirmation of her ability.

However, when the plan was reviewed, problems were discovered. This is the hard work of their entire group, and Kong Ling also knows that they are very hard, so he stays and works overtime to see how to complete this plan.

"Spirit, aren't you off work yet?"

"I'm working overtime today, you can go back first."

"I'll accompany you, it's not good to be alone here."

"No! This is a company, how can it not be safe? Alright, you hurry home! ”

If Xiao Zhao knew that Kong Ling would have an accident at that time, he would not have left after work if he killed her.

"Didn't you see her go to work the next day?" Bai Yaqing asked.

"...... Come the next day, time, and see...... Look at the plan she has changed on the desktop......"

Then the time of the case can be inferred that after Kong Ling worked overtime to change the plan, then this person must be from this company, or an outsider came to the company.

"Excuse me, do outsiders from your company need to register when they come in?"

"Yes, as soon as I came in, I was asked a lot of questions by the security guards downstairs and the front desk, and I had to register my ID information." Ah Feng helped Xiao Zhao answer.

"Okay, please don't go out of City A for a while now, before Kong Ling's case is over." Bai Yaqing kindly reminded again.

"Understand, she's not in a good mood right now, can I take her back first?"

"You talk to her leader about this, and now I have nothing to do here for the time being."

Bai Yaqing turned around and left, and went to the Security Section.

If a company like this has security, it should also have a security section.

Going downstairs to the next floor and out of the door of the building, Bai Yaqing turned to look at the building.

Companies like this, which are not big or small, rent two or three floors, which means that there are people from other companies here. Seven floors, so it seems that there should be one or two more people from the company, excluding outsiders. What if it's someone from another company?