Manstein opened the door to the library, which was silent late at night, and the dust particles on the long table were lifted by the breeze from the door open, and the slightest hint of the moonlight shining through the floor-to-ceiling windows.

The camera hidden in the corner was aimed at the uninvited guest, and after the infrared facial recognition, Norma's gentle voice sounded in the library: "Professor Gerd Rudolf Manstein, it's late at night, I don't know if there is anything I can do to help you?" ”

"Is the school work department off work? I didn't see anyone keeping a vigil in the library where there were so many important materials. Manstein walked into the library and closed the door.

"It's been two hours since the last security officer left for work, and I'll be in charge of library security from twelve o'clock." Norma's female voice echoed throughout the empty library, "It's 2:03 a.m., do you need me to turn on the library lights?" ”

"No, no, my destination isn't here, Norma, I'm going to go down to the archives with the innermost elevator." Manstein said.

"What is the purpose?"

"There were some low-level errors in a recent file that I submitted to the Ministry of Information, and I need to correct some of the details of the file."

"Corrections to the archives belong to the head of the Information Department, unless there is an emergency, I am afraid that you will not have access to the archives in the Manstein classroom."

"The emergency is about a student's ancestry rating, and if his ancestry rating drops because of an error in my file, I will be ashamed and consider resigning." Manstein said lightly.

In Kassel Academy, the matter of pedigree grading is indeed a big deal, and the pedigree rating of students will affect all aspects of the tedious things, and if you want to correct it in this way, it will involve a lot of trouble.

"Grant request, Professor Manstein, you have 'A' clearance, the elevator to the archives is in operation, and your visit and all borrowing and transfers in the archives will be on file."

The elevator lights in the depths of the library came on, and Manstein walked all the way behind his back without saying a word, and when he reached the elevator, he heard a pleasant jingle.

The Kassel Academy does not exist in a cluster of castles on the mountainside, and few people know that the academy on the surface is only a superficial half, while the other half exists in underground fortifications such as Vatalheim, ice cellars, and archives.

The location of the archives is above the ice cellar, where there is a lot of information related to the secret of dragon slaying, which is managed and summarized by the Ministry of Information, all students in the Kassel Academy have their own files, from birth to the ground, if you are lucky enough to still jump on this land, then everything you do will be recorded in this file, but due to the principle of the Ministry of Information, these files are often criticized by students as black history.

The elevator came to a halt after descending to a certain depth, unfortunately there was no elevator music on the way, and since leaving the surface, Manstein's environment was as silent as stagnant water, and he did not hate this environment, but felt a sense of intimacy that had been far away for a long time, and once upon a time the place where he grew was several times more suffocating than that.

The elevator doors opened, and the dark red light illuminated Manstein's face, and the archives were illuminated by the infrared light, and everything looked rigorous and dull in the dim red, and in front of him were iron-gray cabinets lined up on both sides, on which countless kraft paper bags were placed, each of which was sealed with a symbol painted to represent the security level.

Everything in the archives is made of moisture-proof and insect-proof aluminum alloy, which is sterilized by ultraviolet light every three days, and a mouse that strays into it will only starve to death. And all the aluminum cabinets where the files are presented are connected to the high-voltage electricity and gravity sensing devices by Norma, unauthorized reading will trigger alarms and defensive measures, if the intruder is lucky not to die on the high-voltage electricity, then the school work department that rushed to the news because of the alarm system will also make him want to die.

Manstein didn't step out of the elevator in a hurry, but waited until the red light in the file room went out with a "click", and when the bright white light came back on, he walked out, and without looking at the things on the shelves on either side, he went straight to the student file section.

Every student will have two identification numbers at the time of admission, which are the student number and the file number of the Executive Department, for example, his student Mandy's student number is Al082321B, and the file number of the Executive Department is only 082321B.

The first four digits of the file number represent the month and day of birth, followed by the serial number, and the last letter is the blood class, for example, Mandy was born on August 23, the 21st mixed race in the file that year, and the blood class is B.

Manstein clearly remembered that Norma mentioned that Lin Nian's student number was Al052044, and the initial file in the executive department file number was classified as A-level blood, so his executive department file number should be 052044A.

Without hesitation, Manstein went straight to Area A, the group of guys in the Ministry of Information are obsessive-compulsive, not only classify the files according to the bloodline rating, but also intentionally separate the students and graduates, which greatly saved Manstein a lot of time, and it didn't take much effort for him to stand in front of the cabinet where Lin Nian's files were stored, but at this time he was surprised to find that the cabinet was empty, and the brown paper bag that should have been placed here was gone.

Suddenly there was a coughing sound in the silent archives, very strong, reminiscent of a patient with severe tuberculosis in a hospital, each cough was so hoarse, as if the vocal cords were cracking with the sound of a broken cough.

Manstein is no stranger to this voice, and there are very few people in the academy who cough so vigorously, unless this person strays into the fire during the mission, and there is only one person in the academy who will cough like this because of his own factors.

Head of the Executive Department, von Schneider.

A hybrid who needs to carry a ventilator with him to survive.

Manstein turned sideways, and at the end of the shelf, a tall, emaciated man stood, scar like a burn under a pure black suit, half of his cheek covered by a black mask, and one of his eyes was as cold as a knife.

"Professor von Schneider, I didn't know you were in the archives tonight." Manstein's cheeks twitched, but he managed to keep his composure.

I remember that someone on the night watchman forum elaborated that the head of the executive department has always been an elusive person, and if he suddenly appears in front of you one day, then it is most likely that you have violated party discipline, and the next thing is a cruel and iron-fisted purge.

"It's not too coincidental, I just happened to see someone enter the library late at night and use the elevator to the ice cellar, I thought it was some student who didn't know the height of the sky and wanted to steal some alchemy bullets from the ice cellar or something, but I didn't expect it to be Manstein teaching you." Schneider said: "I'm curious about why I'm coming to the archives so late. ”

"A student's file with some low-level mistakes I made, and if not corrected, it could affect his ancestry rating." Manstein said.

"Then you're probably looking for this." Schneider raised his left hand, which was blocked by the cabinet shelf, and in his hand he grasped a stack of transparent sealed folders, which contained archival documents written in black and white.