After going to Xuanwu Gate to report the situation, Yi Tianhang found a restaurant and had a lunch, and then returned to school. Since the target protector was no longer in school, Yi Tianhang's responsibilities were fulfilled. So he walked into the library he had dreamed of.

Similar to another dimension, many books with relatively high technical content in this world can only be found in university libraries.

"Explosion technique, divine movement technique, transformation technique, wall penetration technique, invisibility technique, object control technique, sound transmission technique... It seems that all magic is available, but it seems that there are a few things missing..."

Yi Tianhang said to himself in his heart.

As a spirit of Qi, Lin Hui naturally heard Yi Tianhang's heart...

"What?"

Hearing Lin Hui's voice, Yi Tianhang didn't react for a moment. He only saw him looking back and not seeing anyone who was particularly familiar...

"No need to look for it, here, on your arm!"

Yi Tianhang looked at his right arm...

"Sister Hui, it's you! Are you still here?"

"Always there, okay?"

He hasn't heard Lin Hui's voice for a long time...

Lin Hui continued, "Speak quickly, what?"

"What's the matter?"

"What you said just now is missing a few things!"

"Uh, are you talking about it? Sister Hui, have you noticed that there are so many books here, but none of them are about Qimen Dunjia, Sanqing Talisman, Busan Tianshu, etc. Ordinary alchemy and other works are everywhere."

"As a talisman, I saw the Taoist priests use it, and the fortune telling is just fortune telling, but what is this Qimen Dunjia?"

"Sister Hui, you don't even know this, right?"

"So what's wrong if I don't know? Don't forget, sister, I was a mortal when I was alive."

Yi Tianhang just smiled slightly.

"Haha, that's right!" He continued to explain: "Qimen Dunjia, the treasure of the famous Chinese clan, and the unique skills of the Celestial Dynasty. Legend has it that when Western powers invaded our Celestial Empire, facing the enemy army that was as powerful as a flood and a beast, the genius Zhuge Wuhou set up a earth-shaking and earth-shaking situation on the basis of Qimen Dunjia! He trapped the enemy's main force in the flying sand and stones, and the battle situation began to turn around. From then on, Zhuge Wuhou became famous all over the world!"

Zhuge Liang is another idol that Yi Tianhang admires from the bottom of his heart.

Even if time and space have been transformed, Zhuge Kongming in this dimension is still a symbol of wisdom and is still so great...

“Wow…”

Lin Hui yawned and expressed disdain.

"I didn't expect that you know a lot about history! But after all, what is this Qimen Dunjia?"

"Uh, Sister Hui, you know too, I'm just a half-baked guy, hehe..."

"Tsk! Uh, I seemed to hear a familiar sound of footsteps, just downstairs. It seemed to be the girl named Yutong."

Yi Tianhang was very surprised. This library is as high as ten floors. Each floor has a sports field as big as a sports field. Many heartbeats and footsteps are intertwined. How did she determine that the footsteps she heard were from Wu Yutong?

"You can hear this?"

"I don't know why. In my spirit state, I seem to have strengthened my five senses a lot. Even the frequency of flies swatting their wings can be felt."

"So awesome?"

"hehe……"

Yi Tianhang heard Lin Huitian’s innocent laughter.

"I think if Qi Ling didn't have any special skills, there wouldn't be so many people who wanted to strengthen their strength through Qi Ling!"

Yi Tianhang nodded thoughtfully.

"Sister Hui, after hearing what you said, I suddenly realized something. In this library, I didn't seem to see a book about Qi Ling!"

"What, do you still want to practice dual cultivation with me?"

After hearing what Lin Hui said, Yi Tianhang was immediately in a state of bleeding...

"I said Sister Hui, do you know what dual cultivation is?"

"It's just two people practicing together!"

"I'm going, I really don't know!"

"Of course I know that yin and yang are harmonious!"

"Then you still..."

Yi Tianhang wanted to speak but stopped, and blushed.

"Haha... I'm just teasing you! You don't really think that your sister wants to practice dual cultivation with you, right? But it's not impossible, just..."

"Just what?" Yi Tianhang's face showed a smirk.

"Oh, I won't tell you anymore, you'd better block me! Your little girlfriend is coming, I don't want to be a light bulb."

"Are you talking about Yutong? She is not my girlfriend, we are just ordinary friends!"

"Who is your girlfriend?"

"I won't hide it from Sister Hui, I haven't yet!"

"Haha, that's it? I think this Yutong is good, why don't it?"

"Oh, Sister Hui!"

"Haha, I won't tease you anymore. If you don't want to hear my voice, just block me! I don't care what the relationship between you two is, I don't want to hear you two beating there!"

"Oh well!"

After saying that, Yi Tianhang closed Lin Hui's five senses and left her sleepy.

Suddenly, Yi Tianhang felt someone gently patting his shoulder. The soft force was like a massage.

After turning around, Yi Tianhang saw a warm and easy-going smile.

He was naturally a little overjoyed.

"Yutong..."

In the extremely quiet library, two words blurted out from Yi Tianhang's mouth, attracting many strange gazes...

"Shh!"

Wu Yutong raised her white and slender index finger in front of her cherry mouth. Only then did Yi Tianhang realize that he was in the library and could not make loud noises.

Wu Yutong casually pulled out a book from the book shelf. Yi Tianhang saw three golden words printed on the cover of the book: Sound transmission.

Seeing these three words, he instantly understood what Wu Yutong meant.

Yi Tianhang followed Wu Song, the head of Xuanwu Gate, to perform many tasks, and in many cases, no sound is allowed to be made. Therefore, under such circumstances, the sound transmission technique has been widely used, and Wu Song has also taught Yi Tianhang some basic rules of sound transmission technique.

One of the advantages of magicians over ordinary people is that in many special areas, magicians can use voice transmission to replace verbal communication.

The magician can transmit what he wants to express in the form of waves to the target person's cerebral cortex according to his own wishes. The target person is like hearing the voice of the caster.

If it is just a communication between two people, it is a single-line transmission, so no one can hear the conversation between them.

Compared to using mobile phone conversations, the superiority of voice transmission is that it has not passed through the Internet, just like ordinary conversations, and no records are left. In addition, others cannot hear them, so the confidentiality is naturally quite high...

At this time, Yi Tianhang first initiated a voice transmission technique for Wu Yutong like a voice chat...

"Yutong, how did you know I'm here? How did you find me?"

Wu Yutong just smiled slightly, took out her cell phone, and replied: "Because it!"

"Mobile positioning?"

Wu Yutong nodded with a smile.

"Yutong, do you know why those ancient methods can't be found here?"

"What ancient method?"

"For example, Qimen Dunjia, the Three Pure Talismans, the Book of Busan Heaven, and the Law of the Cheling Fellowship..."

Wu Yutong smiled thoughtfully.

"Haha, what you said are all the unique skills of the immortal sect, of course you can't find it here!"

"The unique skills of the Immortal Sect? Uh, I understand!"

Yi Tianhang smiled slightly and continued, "What kind of unique skills in the Immortal Sect? If you want me to say it, this is called keeping a hand. When the Western powers invaded our Heavenly Kingdom, Zhuge Wuhou set up an unpredictable eight-format map of gods and ghosts on the basis of Qimen Dunjia, which made the Western barbarians suffer all the hardships. Until now, they have not yet understood the essence of Qimen Dunjia."

"You can see that you admire Zhuge Liang very much!"

Yi Tianhang smiled slightly.

"That's!"

Yi Tianhang seemed to have thought of something again.

"Suddenly I remember that there is another book that I can't find here."

"What book?"
To be continued...