"When you need it, you have to say: I am the heir!"

The door knocker Hawk added the last message to Lin En, and then he remained silent and stopped talking.

Now Lynn has obtained three clues in total: things are in the place where knowledge is acquired, 7 and 8 are his lucky numbers, and in specific circumstances he has to say the order: I am the heir!

Among these clues, the only password provided by the door knocker is like a key to open the entrance of somewhere, and the others make people feel that they have nothing to do with the cellar and treasure land.

But the clues provided by the door knocker did not simplify some of Lynn's previous guesses about the place where knowledge was acquired. In other words, if he wanted to find the place where the fairy built, he also had to try and search one by one.

If you have a classroom with 7 rows, 8 rows or 8 rows, you need a house related to 7 and 8 when you want it. What is the bookshelves in the 7 rows, 8 rows, 8 rows, 8 rows, 7 rows, 7 rows, 7 rows, 8 rows, 7 rows, 7 rows in the library?

All the requests are met, Lynn has tried it in the past five days, and there is no special place except for making him a room full of 7 and 8 numbers.

So if you want, you will pass the house and now there are only two places, classrooms and libraries.

There are not many students in each class in Hogwarts, so there are only three classrooms with more than 7 rows and 8 columns, totaling 64 seats. In addition, Lynn's workload for inspection is not large.

After leaving in front of the door of Ravenclaw's lounge, he continued to maintain the magical mantra on his body and was about to go to the classroom first.

The first classroom that needs to be inspected is a familiar place for Lynn.

His commonly used black magic defense class practical classroom.

This classroom is large enough to store many spare tables, chairs and benches. During class, students will pull the table in front back to free up space for Lin En to demonstrate the actual combat. When the table is put back, there are ten rows and ten rows of desks in total.

Lin En first looked at the 8 rows, 7 rows and 7 rows and 8 rows of tables respectively, and then he searched again in the direction behind. As a result, except for the packaging bags of the two Honey Duke Candy Store, he still found nothing. He also tried to say the secret order told by the door knocker, but it still had no effect.

The search for the first classroom was fruitless, and Lin Neng was not disappointed, so he continued to look for the next classroom.

After spending more than an hour searching for three classrooms, no abnormalities were found.

This in the classroom may have been ruled out, so he could think of the only place for the library. If the library was not, then Lynn would really not be able to guess where this place of knowledge acquisition was.

Taking advantage of the night, he touched the direction of the library, and in the middle he met Felch's cat, Mrs. Loris, who was wandering around in the middle of the night.

It enjoys the pleasure of torture students like its owner. It always likes to wander around the castle in the middle of the night to look for naughty eggs on the night tour, and then calls Felch to punish them.

However, for Lynn, if he is caught by a cat now, it would be a joke.

He passed by Mrs. Loris, but the smart cat was unaware of anything.

The gate of the Hogwarts Library is locked by the administrator Mrs. Pins every night, but this lock is just an ordinary lock. In the original work, even Hermione can easily use the unlocking spell to open the lock in the lower grades, which is even more difficult for Lynn.

At night, the library was pitch black. After coming in and locking the door again, Lynn pulled out his wand and used the illumination spell.

The bright light suddenly illuminated the empty space around. Usually, there were little wizards who came to learn, but now there was only Lin Neng. In such an environment, if a timid person was afraid to stay here for a long time.

He held his wand and counted from the first row of bookshelf near the door, and found the seventh row. Then he touched the eighth row, where there were magic books related to expansion spells, copy spells, and full spells. Lyn searched them all but found nothing useful, and there was no effect after reciting the command.

Then he searched in the seventh row of the eighth row but found nothing.

This made Lin En's heart sink slightly. If he hadn't found anything in the library, he would have really cut the clues. Judging from the situation of the branch hat, it would tell itself even if it knew that the place where knowledge was acquired represents something.

However, he did not give up so simply. Lynn kept walking towards the innermost part of the library. He could count eight rows from the front, and the seventh and eight rows could also be found in the back.

From the 12th-last row of bookshelfs, he entered the forbidden book area.

Lynn is not unfamiliar with this place. The forbidden book area is just forbidden for young wizards in lower grades to enter at will. Students in middle and upper grades can borrow books in the forbidden book area by using the professor's note. One of the conditions for him to promise Dumbledore to pretend to be a professor in the Black Magic Defense class is that he can read various magic books in the library at will.

The forbidden book area is of course included.

So although he was very busy these days of school, he would take time to visit the library's forbidden book area every day. After all, those magic that can be made taboos are extremely powerful without exception, and Lynn happened to have extremely outstanding talents in black magic.

He walked to the last row of bookshelf, then counted from behind to front to find the eighth row.

The books here are not full, only seven or eight magic books are leaning together, leaving a large gap. This is normal in the forbidden book area, and there is still a small number of knowledge about taboos. According to relevant classification, Hogwarts' library can place twelve bookshelfs. If all of them are full, the Ministry of Magic will begin to worry whether Dumbledore will also take the path of the Dark King.

There was still no discovery on the bookshelf of the seventh-last row, and Lynn was left with only the eighth-last row and no inspection.

Like the previous inspection method, he first checked whether there was any special place on the bookshelf in the eighth-last row and the seventh row. After confirming that nothing had been discovered, Lin En quietly read out the door knocker and told him the password.

"I am the heir."

Lynn's words echoed in the empty, dark library.

But no abnormalities occurred around, and even the air did not fluctuate at all.

Lin En shook his head in disappointment. Just when he thought he had found the wrong place to leave, he suddenly discovered something wrong on the seventh line of bookshelf!
Chapter completed!