"Who are you?"

"I ...... I'm here to check the ward......"

"There's nothing going on here, you can go." Zhang Zijun said a little indifferently.

"Good ......"

Zhang Zijun didn't notice that there was a little bit of blood oozing out of the pocket of his clothes. In his hand, there was a syringe in his hand, and he planned to inject Xiaoxiang with medicine, but Zhang Zijun found out.

He had no choice, so he put the syringe in his pocket, and in a hurry, he put his hand in his pocket, and accidentally cut his finger.

………………

Bai Yaqing woke up early in the morning, and then remembered that she just washed her face last night and fell asleep directly. But he didn't change his clothes, he touched his pocket, and remembered that Zhang Zijun picked up something last night, as if it was dropped by the murderer.

"What about that thing...... That's right! On Zhang Zijun, on Zhang Zijun! Bai Yaqing thought of this, immediately got up and washed her face, and after taking care of her skin, she drove directly to the hospital without makeup.

………………

The inpatient department of the hospital, the ward where Xiaoxiang lives.

"Zhang Zijun! Zhang Zijun! ”

"Huh? Xiaoqing? Why did you come here so early? Zhang Zijun, who was awakened by Bai Yaqing's scream, woke up immediately.

"Did you pick up the murderer's stuff last night? Show me! Bai Yaqing said in a hurry, because she ran up, she was a little out of breath.

"Now, this is it." Zhang Zijun fumbled out of his pocket and said.

Bai Yaqing looked at this keychain, it seemed to be the key to some lockers.

Lockers? I can't even confirm the identity of that person, how do you know where this locker is? Corporate? Organs? In short, it is impossible to confirm at all.

"This is the key to the locker, whose ...... the hell is it?"

"It's hard to say, it's just a regular locker key." Zhang Zijun said.

Bai Yaqing was also thinking about it, but it was better to go back to the laboratory to see if it was better to find out.

Fortunately, Zhang Zijun was holding a transparent self-sealing plastic bag, which was okay. At least it won't destroy the evidence and can be better detected.

"You go back and rest first, and by the way, take this back to the police station for testing, and let Shasha come over to help." Bai Yaqing said.

Zhang Zijun has been guarding here for so long, and he should be very tired after protecting here all night.

"I'm fine."

"How can it be okay? Go ahead, Sasha will be here with me. Bai Yaqing said.

Zhang Zijun was indeed a little sleepy, so he had to listen to Bai Yaqing's words, go back to the police station to rest, and take the key back for testing by the way.

"Xiaoxiang's mother, this is the breakfast I brought, let's eat some first."

"Thank you, Officer White."

Bai Yaqing smiled and didn't speak, waiting for the test results over there.

………………

Half an hour later, the forensic department had completed the test and the report had been delivered.

When Sha Sha was leaving, he received a call from Bai Yaqing.

"Team leader? Can I help you? ”

"Are you coming to the hospital now?"

"Not yet, it's still at the door of the office."

"Then what character puzzles do you bring by the way, and first put together a portrait of a suspect." Bai Yaqing explained.

"Okay."

Half an hour later, Sasha arrived at the hospital.

According to the ward number sent by Bai Yaqing, the ward was found.

"Team leader, everything has been brought."

Bai Yaqing took the report directly, and it said that there were some disinfectant ingredients on the key......

Disinfectant water ...... Where will disinfectant be used?