After finishing the day's lecture, Felix left plenty of time to answer questions.

"Professor, how do I pass the 7th level of the ancient magic rune?" A young Slytherin wizard raised his hand to ask a question.

" Montague, I remember I tagged the hints on every level?" Felix blinked.

"But you just left a book title, Professor." He said with some resignation, "And it's an unread book."

The other young wizards also murmured and discussed.

"Ahem!" Felix cleared his throat and magically drew out a piece of parchment as they looked over, "In fact, you were supposed to have already read it."

"The book, Easy Ancient Magic rune, appeared three times on your last year's paper reference list ... Shall I remind you which ones?"

The young wizards looked at him dumbfounded as the discussion came to a halt.

"Teach, professor, you weren't here last year?"

Felix said in a light-hearted tone, "I exchanged letters with Professor Babbling, and she told me about the cache of information from previous years." He looked down from the podium with some emotion, "She is quite a serious professor, isn't she?"

...

Later that night, Felix stood in front of the Room of Requirement.

During the day, a suspicion had suddenly occurred to him that the Room of Requirement is Lady Ravenclaw's secret room. But whether this idea is correct or not is yet to be tested.

Behind him is an enormous moving tapestry depicting Barnabas the Barmy's foolish attempt to train a group of eight trolls, and one of the trolls stops beating the ballet teacher and turns its head to gaze at Felix.

A bug crawled up the troll's foot and into its nostrils, and it let out a silent hiss as the stick in its hand flew high above and smashed into the head of another troll.

But all of this had nothing to do with Felix Hap, who silently mumbled in his mind, 'I want to enter the secret chamber of Rowena Ravenclaw ... I want to enter the secret chamber of Rowena Ravenclaw ... I want to enter the secret chamber of Rowena Ravenclaw ...'

He walked past the place three times, he couldn't stop his heart from racing, and then, he looked up - there remained a section of an ordinary white wall in front of him.

Felix was silent, "And yes, I do not know how to enter it?"

The entrance to the Room of Requirement is simple, but it is not something that can be easily exploited.

He thought for a while, once again silently recited, 'I would like to enter the original Room of Requirement ... I would like to enter the original Room of Requirement ... I would like to enter the original Room of Requirement ...'

Still no change.

Then, Felix thought of the Slytherin Chamber originally used for teaching, so he tried again ‛I want to enter the secret place where Rowena Ravenclaw teaches her students.' Or 'I want to enter the laboratory of Rowena Ravenclaw.'

But no door appeared at all.

Felix could only leave helplessly, but in the next few days, he kept trying to connect the Room of Requirement together with Rowena Ravenclaw, and he thought of almost everything he could think of, without any luck.

Just when he was about to give up, on Friday evening, he ran into Ms. Gray on the courtyard - for the third time this week - and the two casually made small talk and watched the sunset together.

In his mind, Ms. Gray was a somewhat haughty and prideful, but kind-hearted and refined lady, and putting aside a few petty thoughts, it seemed very pleasant to chat with her.

"It's beautiful~," said Ms. Gray.

"Do you rarely look up to view the sunset?" Felix said, striking up a conversation.

"Rarely," she hesitated, but the two had got to know each other well enough to admit it, and she said, "It reminds me of something sad ..."

Felix didn't ask more questions, and he kept his mouth tightly shut.

The two looked at the dazzling red haze, a few streaks of light piercing the clouds, edging them with a golden edge.

"Will you keep a secret for me?" She said suddenly.

"Yes, I will." He did not promise, but still answered her confidently.

But Ms. Gray believed it, and tried to open her heart, she said with some sadness: "I died in such a sight."

After she had uttered her first words with some difficulty, she seemed to free herself and spoke in a rush: "It was about the same time as now, only it was in the forest of Albania, a desolate place, and I thought- it's out of my mother's reach."

Felix listened in silence, knowing what would happen next.

It was a tragedy, a tragedy that formed Lady Grey of Hogwarts and Bloody baron.

"I grew up with extraordinary talent, the most privileged of the bunch. I grew up with people touting me, and year after year, I was completely giddy ... but by the time I was old enough, I realized that no matter how hard I tried, I was still no match for my mother. So-"

"I stole my mother's diadem because it bestowed wisdom, and I imagined I could surpass her with it."

Her transparent body began to tremble.

"They say," she choked out, "that my mother never admitted when the diadem was gone, and she kept pretending it was still there. She even hid that loss from other founders of Hogwarts, concealing my disgraceful betrayal."

"Then my mother became ill - very ill. Even though I had done something ungrateful and unjust, she was still desperate to see me again. She sent a certain guy to me. But I rejected him, thinking he was lying to me, along with my mother. How could she be sick when she had already taken that step a long time ago?"

Felix said calmly, "It's Bloody Baron."

"That's him. I refused to go back with him, and he went into a rage - he always does, and the dark magic has completely eaten him up."

Felix listened quietly.

"We had a violent conflict, and no one could have foreseen the consequences ... He stabbed me to death with his sword. I fell to the ground and saw this vision of dusk ..."

She lifted her head and watched the last glow slip away.

After a long silence -

Felix asked, "Do you hate him, Bloody Baron?"

"Do I hate him! He destroyed me, my magic, my life, my everything!" She yelled with indignation.

Helena Ravenclaw took a deep breath and raised her head so that her expression could not be seen.

"And," she whispered, "Before I died, I asked him if what he said was true. It was about my mother ..."

"He told me everything was true, that my mother was truly very sick. He deprived me of the chance to see my mother one last time, my only chance to redeem myself! Do I hate him, you ask? My answer is, of course I do!" She suddenly shouted out of control.

She floated and was about to leave, but her hand got caught and Helena looked back in shock, even her expression of anger lightened considerably.

Felix's hand shrouded with a cold, ghostly blue light, and he tightened his grip on her hand.