Niu Jiazhen and Niu Jiarong nodded quickly after hearing this.

"Officer, we understand, we will absolutely not utter a single word."

Wu Dinghuai further emphasized:

"If you remember anything about the barber Liu Xianghai, please report it to our investigation team immediately. Now, you sisters can leave. Go to the infirmary to see your great-grandfather's body first. As for how to handle your great-grandfather's body, we will discuss it with Section Chief Liang later and then inform you."

After hearing this, Niu Jiazhen and Niu Jiarong didn't say anything. They got up, nodded to the three police officers, and then hurriedly left the office, closing the door behind them.

They knew very well that their father had committed suicide out of fear of punishment, and more seriously, that he had connections with secret agents.

The two sisters had just left when Liang Damin walked in.

Wu Dinghuai was in charge of the questioning, while Shao Jian observed and listened from the side.

Seeing Liang Damin walk in, Shao Jian said to Liang Damin:

"Old Liang, we have questioned Niu Dajiang's two daughters and learned some information. You can arrange for them to transport their father's body home. In this hot summer, you can ask your factory canteen's cold storage to provide some ice. When his son Niu Jiayu comes back, you can also ask him to come to our investigation team. An autopsy has already been performed, and his family can make arrangements for the funeral."

Liang Damin naturally understood Shao Jian's meaning, agreed, and went out.

As soon as Liang Damin left, Wu Dinghuai turned his head to look at Shao Jian.

"Director Shao, is there any problem with asking this question?"

"Dinghuai, you did a good job. These sisters shouldn't have much of a connection with Liu Xianghai. It seems that Niu Dajiang and Liu Xianghai's relationship isn't something that happened overnight; they've known each other for a long time."

Just then, the phone on the desk rang, and Zhao Le quickly got up to answer it.

After hanging up the phone, he walked up to Shao Jian and reported the contents of the call.

"Director Shao, it's a call from the Municipal Bureau. They want you to come back to the Municipal Bureau immediately. They say that a leader from the Provincial Department has arrived, and the undercover team related to Liu Xianghai has more information."

Shao Jian smiled:

"That's good news. I'll head back to the bureau in a bit. Dinghuai will be in charge of things here for now. If there are any important developments, please contact me by phone."

As he spoke, Shao Jian got up and left the office.

As he reached the door, he suddenly turned back to look at Wu Dinghuai:

"Dinghuai, Qiu Jingwen and his wife, do not forget to keep a secret watch on them."