There was a pungent smell in the library, and the shelves were empty.

"This ......," Song Duanyu said, "maybe because of the age, all those martial arts classics have been weathered." ”

"No way, it's impossible. ”

Nalan Su couldn't stop trembling, his cheeks twitched slightly, "There are thousands of books in the Xuanwu Underground Palace, and it is absolutely impossible to weather. There is only one possibility. ”

A hint of horror flashed in her beautiful eyes as she looked at Song Duanyu.

Song Duanyu flicked his sleeves and eased his expression, "Someone has taken the lead!"

"No way, half a foot of snow is the key to open that bronze gate," Naransu muttered to herself, "unless, there is another possibility." ”

"What?"

"The one who took the lead is the descendant of the 'Blue Emperor'. ”

Nalansu gasped, she was startled by the thought of herself.

"Isn't Emperor Qing a figure from a thousand years ago? It's normal for a character like him to have descendants in later generations", Song Duanyu touched his chin, "Isn't it strange?"

The young man looked at Naransu with doubts in his eyes.

"But the Qingdi has no heirs at all!", Nalansu said, "According to the records of the Qingdi Chronicles, the Qingdi has always been alone from the beginning of the rivers and lakes to the pinnacle of the world, and has never married, let alone children. ”

Song Duanyu was stunned for a moment, only to hear Nalan Su say, "Now that all the martial arts classics have been destroyed, there is no need to look for them, let's go back." ”

Naransu said as he turned and walked outside the library.

Song Duanyu clearly saw the loneliness in the woman's eyes. He looked at the woman's back, and suddenly found that the woman's body was a little weak - at the foot of Xiaozhong Mountain, in the underground corridor, there was a gentle heart in the heroic posture of Changhong.

Song Duanyu was about to catch up, but he caught a glimpse of a raised stone slab on the wall behind the bookshelf.

"Wait," Song Duanyu said, "come and see." ”

Nalan Su turned around slowly, and his voice returned to its previous coldness, "What?"

"This stone slab seems to be a little weird", Song Duanyu walked to the edge of the wall, and was about to put his hand on the raised stone slab, but was stopped by Nalan Su.

"Let's go out first. ”

Song Duanyu followed Nalansu to the door of the library pavilion.

"What are you doing out there?"

Naransu chuckled, "I forgot about the losses I suffered before, and now I forgot about it?"

I saw the woman put her fingers together, her beautiful eyes concentrating, and pointing towards the raised stone slab. I saw an arrow-shaped white qi machine gushing out of her fingertips and hitting the stone slab directly.

Song Duanyu only now understood Nalan Su's intentions, if that raised stone slab was dangerous organ news, it would definitely cause trouble if it was opened rashly. Walking in this Xuanwu underground palace, it is better to be careful.

After about three breaths, the protruding stone slab suddenly collapsed into the wall, and the whole wall spun to the right, revealing a secret passage.

"There's a door! ”

Song Duanyu and Nalan Su walked forward along the dark path, turned a corner, and could see a few scattered fires in the distance. When they got closer, a stone bridge appeared in front of them, and there was a small lake under the stone bridge, and the small lake was steaming hot, baking the whole stone bridge.

From a distance, on the other side of the stone bridge, there is a huge statue. The statue depicts a handsome man in a green robe, a man wearing a crown and a pair of starry eyes, as if it were real.

There is a wooden box in front of the statue, which is not very real because of the moisture.

Song Duanyu turned his head to Nalan Su and said, "I'll go over and take a look, you're injured, stay here and don't move." ”

Naransu said, "The water under this bridge is not ordinary, don't move it yet." ”

Song Duanyu listened and stopped.

I saw Nalansu pick up a small stone from the side and throw it into the water. Before the stone could touch the water, it turned into a puddle of powder.

"This", Song Duanyu was shocked when he saw this scene, "Then how can I get over." ”

Naransu's brows furrowed, as if he was struggling to think.

"This is like the 'sinking water' recorded in the ancient books, this kind of water is extremely hot, if you go up, maybe it will become a pool of blood. ”

I saw Nalan Su holding the sword in his hand, covering the sword body with true qi, and then throwing it towards the other side of the bridge.

A crisp sword roar slashed and shot out with a burst of red, but before it could fly over the center of the stone bridge, Nalan Su's face had changed greatly. I saw that she withdrew her hand again and took back Yizhang Hong.

The original snow-white sword body of Yizhang Red has been slightly red, which shows the horror of the 'sinking water'.

At this time, Song Duanyu suddenly said, "The exercises recorded in the book "Three Inches of Green" that we obtained earlier in that sword formation may have something to do with here?"

Under Song Duanyu's suggestion, Nalan Su hurriedly said, "You give me "Three Inches Green". ”

Nalan Su opened the ancient book, read it carefully, and praised, "This is a wonderful law and martial arts book in itself, boy, it's cheap for you." ”

Song Duanyu's face was a little embarrassed, "You can also cultivate." ”

I saw Nalan Su smile and said, "I already have a teacher, and besides, this "Three Inches Green" is not something that everyone can cultivate. ”

Song Duanyu was puzzled, "What do you mean?"

"Only those who have cultivated the Pure Heart Technique are qualified to cultivate this own Dharma and martial arts. ”

Song Duanyu suddenly realized, and Nalan Su continued, "However, with the true qi in your body, you can't drive this body method at all. ”

Nalan Su's beautiful eyes were fierce, and her palms were filled with a cloud of mist, only to see that she sent this true qi into a zhang of red.

"You take a zhang of red, and then follow the luck route and mental method recorded in the book to urge this set of "Three Inches of Green". ”

Song Duanyu sat cross-legged, holding "Three Inches Green" and reading carefully.

Half an hour later, Song Duanyu walked to the edge of the stone bridge. He looked at the tumbling lake, and his heart was still a little nervous. If something goes wrong, your life is not guaranteed.

"If I die, you must find Uncle Zhang for me", Song Duanyu said with a sad face.

"Okay, you kid, what is a manly man doing so pretentiously", Nalan Su scolded with a smile.

The two have also had a tacit understanding along the way, and this conversation is just to relieve the tense atmosphere.

Song Duanyu tightly grasped the red that Nalan Qing gave her, and gathered the true qi overflowing from the hilt of the red sword on his palm.

He constantly chanted the mantra of the heart, and with the mind and spirit, he induced the true qi in his body to follow the established route.

Everything was ready, only to hear Song Duanyu shout, "Get up!"

A blue light crossed the surface of the lake, Song Duanyu opened his eyes, looked back, and found that Nalan Su was already opposite him.

He turned around again and carefully examined the stone sculpture of the man in front of him.

The strange call that had come to him from before came to him in a daze, and he looked at the man's face, and felt vaguely familiar, but he couldn't remember where he had seen it.