Li Liqun asked her to investigate the whereabouts of the military personnel sent from Shancheng. Shen Yutang continued to send people to stay in the safe house and wait for the opportunity.

He also sent out all the other members of the special agent brigade, letting them wander around Shanghai like headless flies.

She took her deputy captain Han Yong with her and stayed in office No. 76 of the Special Agent Headquarters to command the operation all night.

With Han Yong as a witness, it can be proved that she stayed in her captain's office all night.

In the early morning, when Han Yong was so sleepy that he dozed off on the deputy captain's desk, Shen Yutang herself left the office.

And the one who still stayed in the office and sat at the desk without any sleepiness was the puppet Tang Yan.

I added 100,000 merit points to the "Invisibility" skill, and then upgraded the primary "Invisibility" skill to an advanced level.

The invisibility time increased significantly from a dozen minutes to six hours!

With these six hours of invisibility, Shen Yutang can move around in Agent Headquarters No. 76 without any worries.

If the confidential office did not have the Ma Xingmin file she was looking for, she could even go to Li Liqun's office to look for it.

Although it was already two o'clock in the morning, some important places in the secret service headquarters were still guarded all night.

Just like the confidential room, there are usually two soldiers taking turns guarding the door.

There was also a confidential secretary in the confidential room who was on duty that night.

As far as Shen Yutang knew, the confidential secretary on duty in the confidential room would lie down on the sofa in the confidential room and sleep at twelve o'clock in the evening.

After all, there were soldiers on duty outside the door that night, and there was no need for the confidential secretary to stay up all night on duty.

In the absence of any emergencies, the soldiers at the door of the confidential room would tacitly take turns to rest after twelve o'clock.

One person sleeps from 12 o'clock to 4 o'clock, and the other person sleeps from 4 o'clock in the morning to 8 o'clock.

At eight o'clock in the morning, when the leaders of the secret service headquarters gradually come to work, the two of them will stand guard at the door at the same time.

Shen Yutang has been lurking in the secret service headquarters for more than half a year, and she still has some understanding of these details.

So when she used the "invisibility" skill at two o'clock in the morning, she came to the door of the confidential room quietly.

There was only one soldier here, sitting in the aisle at the door of the confidential room with sleepy eyes.

He sat on the ground with his head against the wall, yawning continuously, obviously he was extremely sleepy!

Shen Yutang took out the anesthetic flying needle from the props column in invisible state.

He blew out a flying needle at the soldier on duty who was extremely sleepy, and it pierced his neck directly.

The soldier only felt like he was bitten by a mosquito on his neck. He touched his neck with his hand and fell asleep on the ground.

The anesthetic effect of the anesthetic flying needle is usually about five or six hours. However, if you want to relieve the anesthesia state of the anesthetized patient in advance, you can also take out the other antidote needle at the tail of the anesthetic flying needle.

The antidote needle at the tail of the anesthetic flying needle cannot be shot out, and it only has a hollow needle like the one used for injections and infusions in hospitals.

You only need to use the needle at the tail to pierce the skin of the anesthetized person and inject the antidote into his body.

Next, Shen Yutang only needs to inject the soldier with an antidote to remove the anesthesia before leaving, and he will be like he is really asleep.

When another soldier comes back to relieve the guard at four in the morning, he can be easily woken up.

It would not reveal the truth that the soldier had been attacked.