On the tarmac outside the Planetary Defense Council building, three Black Hawk helicopters transferred by Captain Matthew were parked at the moment.

Sun Yu's eyes were sharp and his expression was resolute. After nodding to Captain Matthew, he got on one of the helicopters.

The security level at this time has been raised to the highest level. On Sun Yu's route back to the base, snipers are placed on every building. But that's not all. Three F-22s are cruising at an altitude of 3,000 meters at the moment.

Ten SM-3 chain-type anti-aircraft missile interceptor vehicles have occupied open vantage points.

"Chug, tug, tug, tug!"

As a loud propeller noise was heard, three Black Hawk helicopters rose from the ground and flew rapidly towards the base.

On the helicopter, Ada kept looking at Sun Yu intently.

After making eye contact with Ada, Sun Yu patted her thigh and said loudly: "Go back to the base later and let the doctor treat your wound."

Ada didn't speak, just nodded. She had many questions to ask Sun Yu, but in this noisy environment, she didn't ask...

Ten minutes later...

Three Black Hawk helicopters slowly landed at a military base in the suburbs of New York.

Several military doctors who had been waiting here quickly came forward.

However, Sun Yu pointed directly at the base building and motioned to go in before talking.

The military doctors didn't say anything, but followed directly behind Sun Yu and Ada.

Base medical room.

Sun Yu was watching the military doctor tend to Ada's wounds.

Ada's arms, waist and thighs had many minor wounds scratched by the flying sand and rocks produced by the explosion.

Military doctors are doing disinfection carefully.

During the whole process, Ada didn't even frown.

After treating Ada's wounds, Sun Yu took her back to the office.

Taking a sip of whiskey, Ada also poured some for Sun Yu.

Taking the wine glass handed over by Ada, Sun Yu did not drink it, but put it directly on the coffee table.

After Ada sat on the sofa, she asked softly: "I have always had a question."

Sun Yu, who was changing clothes, asked without looking back: "If you have any questions, please tell me."

"I have been thinking about a question along the way. You said that the sophons of the Trisolaran people have been monitoring us. Why don't we just lock the sophons in the sub-universe?"

Just as he was halfway up his pants, Sun Yu froze and said with a smile: "The speed of Tomoko is close to the speed of light, how can we close it? If we go in with our front feet, Tomoko will follow. When we come out with our back feet, Tomoko will also come out. Do you think we can?"

Is it faster than the speed of light? That’s an existence that circles the earth seven and a half times in one second.”

"Then there is no other way?" Ada continued to ask.

"We'll just have to wait until we develop technology that can shield sophons in the future. Right now, there's no way..."

"Will allowing sophons to come and go affect the difficulty of entering the sub-universe?"

"Needless to say? The difficulty will definitely increase and more uncertainty will be added."

Ada sighed softly and drank all Sun Yu's wine.

After changing clothes, Sun Yu sat next to Ada. He put his arm around Ada's shoulders: "I will take people into the sub-universe in a while. If you are injured, don't go."

Hearing this, Ada shook her head: "My injury is nothing. I am your personal bodyguard. Without me, something will happen to you..."

Sun Yu laughed loudly, and then ticked Ada's nose: "Just don't show off, this sub-universe is relatively simple."

"What is our mission?" Ada asked.

However, Sun Yu did not say that since he knew that Sophon would enter the sub-universe and interfere, Sun Yu decided not to release the mission. All actions would be taken at that time, and he would try his best to squeeze out the time for Sophon to notify the opponent and interfere with the progress of the mission.

"Just follow me. I will tell you before the mission begins."

Hearing Sun Yu say this, Ada immediately understood...

Narrowing his eyes slightly, Sun Yu began to check the relevant mission logs of "Captain America 1".

But what surprised him was that this sub-universe parallel to level 1 not only did not require unlocking points, but also did not have any tasks, not even side tasks...

What is going on...

Sun Yu began to think about it.

Could it be that you just want me to obtain the technology inside?

"Captain America 1" takes place during World War II. What technology is included in it?

Body-strengthening serum, Captain America's vibranium shield, and the Cosmic Cube space gem.

That's all Sun Yu could think of, but his eyes still lit up slightly.

Then, the corners of his mouth tilted up, and he had his own plan.

Thinking of this, Sun Yu immediately stood up: "Let's go!"

Inside the secret underground research room.

SEAL Team 2, led by Captain William, is already ready to go.

After seeing Sun Yu, Captain William saluted with a military salute: "Hello, sir, all members of SEAL Team 2 are here, sir, please assign the mission!"

"There is no mission, just follow me. I will tell you when the time comes. Let teams 1, 3, 4, 5, and 6 stand by...waiting for my news..."

"Yes! Sir!"

Sun Yu, who was wearing a black leather jacket, let out a long breath, then stretched out his right hand and summoned the time and space gate leading to "Captain America 1"...

July 1942, New York, USA...

In an abandoned warehouse, a dark space-time passage slowly opened.

A group of modern people dressed in costumes from the 1940s walked out of the time and space passage.

They walked out of the abandoned warehouse. Sun Yu took a deep breath of the air here and thought to himself that the air in the United States is not sweet, isn't it?

After taking a look at his surroundings, Sun Yu started walking towards the city center with a group of people wearing windbreakers.

On the way, while the people here were not paying attention, Sun Yu ordered William's SEAL Team 2 to buy a few classic cars...

According to the vague memory in his mind, he was looking for the secret antique store. Underground there was a secret laboratory to strengthen Captain America.

After wandering around aimlessly for a whole day, the antique store that Captain America rushed out of suddenly appeared in Sun Yu's eyes.

Immediately, he signaled to stop.

After getting off the car, he tidied up his clothes and entered the antique store disguised as a customer.

As soon as I entered the door, I was blocked by an old lady.

"Excuse me, is something wrong?" the old woman asked.

Sun Yu frowned slightly and began to look up and down at the old woman who was already over sixty years old standing in front of him. After intertwining with the vague memories in his mind, he knew in his mind that this was the "Tutto" with the submachine gun.

Spy old man.

In order to avoid alerting the enemy, Sun Yu said in standard American English: "Let me see if there is anything I want."

"The door is closed here today, please leave." The old woman said with a vigilant look on her face.

After hearing the eviction order, Sun Yu smiled slightly, turned around and left the antique store.

"Did you see the big hotel opposite? Go get some cash, we'll stay there today..."
Chapter completed!