The sage was determined to die.

Ji Bai really wanted to say "my home," but his home didn't actually look like that, nor was it that big.

They continued walking further in, through the long corridor, until the thick, gray fog began to dissipate, without hearing the footsteps of a fourth person.

"That's strange," Wang Zhixuan said. "Where are the examiners here?"

"Maybe he just likes to sleep in late," Ji Bai said calmly.

Upon hearing his words, Wang Zhixuan couldn't help but let out a cryptic laugh.

Ji Ying glanced at him with some surprise.

Ji Bai shrugged. He wasn't making this up. When he was talking to Granny Tanxin, he specifically asked about the characteristics of the other examiners in the Book Mountain. Granny Tanxin mentioned it again because she still wanted to work with him.

The examiners at Wulibi are not quite right in the head and have no sense of public morality. They either sleep all day or scribble all over the place.

However, he is a senior figure, and I wonder how many years he has been here.

She told Ji Bai to be more respectful when he met people.

Ji Bai was here for the first time, and the other two were here so early for the first time.

As they walked, they observed the strange props. Wang Zhixuan frowned, looked at the stone at his feet, picked it up, pointed to the symbols on it, and said, "Could this have been carved by the examiner?"

Ji Bai recognized the familiar Fourier transform formula at a glance.

"These records were also found in the teacher's study."

Wang Zhixuan gripped the stone tightly, his brows furrowing slightly. "But no one can solve the mystery on it. What exactly is this thing?"

Ji Bai didn't speak, but answered in his heart.

He thought that in this world, researching the conversion of time-domain signals into frequency-domain signals was indeed a distant prospect.

Wang Zhixuan put the stone back in its place, dusted off his hands, and was about to say something when an unfamiliar female voice interrupted him.

"That's the Fourier transform formula."

The three of them looked in the direction of the sound and saw a person who was much younger than Ji Bai had imagined slowly walking over.

She looked to be in her early twenties, not much older than him. She was pale and dressed very casually. As she spoke, she stretched her arms.

She stopped when she was within two meters of them.

She seemed to have just woken up; she rubbed her eyes sleepily, and when she saw that there were only the three of them, she clicked her tongue in dissatisfaction and said, "Is it just the three of you this time?"

Ji Bai shook his head and explained, "We're just coming in first."

The girl nodded, squatted down to the side without much concern, picked up two stones, and started carving on them.

Her inexplicable behavior, with the added advantage of her status as an examiner at the Book Mountain, did not elicit any questioning from Wang Zhixuan.

Seeing that the other party had no intention of hiding anything, Ji Bai looked at it openly and saw that the other party first carved RMP on the stone and then casually threw the stone away.

"My brain hasn't been working too well lately."

She ruffled her hair haphazardly, looking extremely dissatisfied. "I can't remember a lot of things."

She wasn't very tall, and she had to raise her head slightly to look at the three of them, but she still put on a very high-handed air.

She was about to speak when she coughed again before saying, "I don't like you calling me examiner. You can call me professor."

"What's wrong?" Wang Zhixuan tried to utter the sound.

Ji Bai looked at her with amusement and said, "You're so young and you're already a professor?"

The girl seemed to have been touched on something, and her tone became hesitant: "Dreams...can't I have dreams?"