The towering aerial research institute, the tip, has the appearance of a spherical fortress, and the shell of the fortress is made of smooth and solid metal plates. Its interior is bounded by the equatorial plane, the largest circular section in the center, and is divided into upper and lower parts. The upper area is called "Zone X" and the lower area is called "Zone Y". Zones X and Y each have 10 floors, and the equatorial surface is called "Floor 0". The X zone above the equatorial plane includes layers X1 to X10, and the area of each layer decreases gradually with the upward movement. The Y zone below the equatorial plane consists of layers Y1 to Y10, and the area of each layer decreases sequentially with downward direction. The largest floor 0 has an area of 100,000 square meters, and the volume of the entire institute is about 23.8 million cubic meters.

Except for airplanes, airships, etc., there is no means of transportation that can reach the tip directly. Due to the contribution of cutting-edge to the development of science and technology, it has been specially granted exclusive airspace rights, and the fortress building and its surrounding area are its airspace within 5 kilometers. Except for EDGE's own special transport aircraft, no other flying objects are allowed to enter the airspace without EDGE's permission. Patents for cutting-edge technology are highly classified, and they are specially granted the right to arms, and the fortress is heavily guarded inside and outside. The surface of the spherical casing of the Tip Fortress is equipped with detection radar, machine guns, turrets and other firepower equipment, and there is a specialized department responsible for supervising and operating these equipment. If an unidentified flying object is detected intruding into the airspace, the tip can legally fire itself and shoot it down.

Although there is no transportation on the ground to reach the tip, the tip has its own 12-kilometer-high special elevator called the Cloud Ladder, which allows people on the ground to reach the top of the tip in 2 minutes. Of course, the bottom of the cloud ladder is also heavily protected, and several cutting-edge security machines are heavily armed, guarding the place day and night, prohibiting anyone or anything from entering without permission. These security-oriented machines are also located on each floor of the Frontier Fortress, guarding the security of the institute at all times.

"Team Song, I've kept you waiting."

Song Shicong waited at the bottom of the cloud ladder with a team of more than a dozen people for less than five minutes, and the door of the cloud ladder opened, and a young woman dressed formally and behaved in a dignified manner walked out.

It's so beautiful. Shen Fei was immediately fascinated.

"Hello, this is a search warrant, please cooperate." Song Shicong showed the woman the paper.

"Hello officers, I'm the head of the advanced technology department and secretary to the director, Ming Yinyi. Now I'll take you in, please. ”

"I'm in trouble."

The group followed Ming Yinyu into the cloud ladder. As soon as the door closes, the ladder begins to run rapidly upwards.

This is the first time that all police officers, including Song Shicong, have come to the cloud ladder and the first time to go to the tip of the search. Curious officers looked out through the glass. Looking down, it's like being in the middle of a blue sky, with the clouds at your feet.

"That's a pretty fast ascent." Shen Fei felt that his heart was beating faster, and he couldn't help but sigh. But the reason for this rapid heartbeat is not only because of the cold in the high place, but also because of her.

"The cloud ladder is made with cutting-edge core technology, which is the only one in the world." Ming Yinyu said.

Two minutes later, the cloud ladder climbed to the lowest level of the research institute, the Y10th floor, and stopped.

"Next, please transfer with me to the elevator inside the institute and go to the central hall on the 0th floor, where the director is already waiting for you."

"That's what it looks like inside." Song Shicong looked around at the Y10 floor. This floor is full of heavy machinery with dashboards, the room temperature is on the high side, and there are few staff present.

"This floor is the power engine room, which converts the collected and stored solar and wind energy into electricity, supporting the necessary operations of the entire institute." "Since it is fully automated, there is no need for colleagues to stay here except for regular maintenance and inspection. ”

The elevator stopped and opened, and a magnificent scene appeared before everyone's eyes: the hall was surrounded by holographic projections, and the projection of words and images appeared. The text includes the work schedule of the personnel on each floor, a list of important matters of the institute, etc., and the images include the display of various technologies, equipment, and machines that are under or after research and development. In the center of the hall is a large cylindrical device of great height, which is the elevator that everyone is riding on. The elevator extends up and down, with the top straight to the top X10 floor, and the bottom straight to the bottom Y10 floor. Everything is running in an orderly manner, and the staff members are doing their jobs, including human beings and creative opportunities to assist human beings.

"Hello, Officer Song." Tang Yuan stepped forward and took the initiative to shake hands with Song Shicong. Today's Tang Yuan is different from the outfit when attending the King Tournament, he wears electronic glasses and a white coat, revealing the unique domineering spirit of a scientist.

"Director Tang, I won't say polite words and get straight to the point, you should know the purpose of our visit today."

"It's for the 306 incident. I saw the news and wanted notices, and I also heard a little from Brother Su that the criminal has something to do with a creative machine, right? ”

"Well, please let us search for clues, and I have some questions for the director."

"Please, it would be nice if I could help you."

"Thank you for your cooperation." Song Shicong turned to Shen Fei and said, "Let everyone disperse and go to all levels to investigate." ”

"Yin Yu, you arrange a few spare machines to be the guides of the police comrades." Tang Yuan cooperated very actively.

"Okay." Ming Yinyu faced Shen Fei, "Officer Shen, I'll be your guide." ”

"Good! It's an honor! Shen Fei patted the back of his head and smirked.

After the crowd dispersed, their search began.

"Director Tang, then I'll start asking." Song Shicong took out his notebook as he spoke, "First of all, is the wanted Chuangzhi machine made by you at the cutting edge?" ”