Under the robbery cave, it is dark and dim, the stone walls are craggy, and the corners are growing with faint fluorescent moss, which makes the cave that should be pitch black have a faint light. Pen fun and pavilion www.biquge.info

Ye Xuanfu and Zhang Mingyu were a little stunned, the thief hole was above their heads, almost invisible, because it was too high, and there was a cold and hard rock behind them, and there was no way out.

Only forward!

The two glanced at each other, and a calm and confident smile appeared in tacit understanding.

"When you go back next time, you remember to give me the light feather talisman, uncle!"

"Boy, I can't fly, and I'm counting on you to climb up when the time comes, and then put the rope down and pull me up."

Ye Xuanfu and Zhang Mingyu haven't really entered the underground palace yet, and they have already discussed how to go back, this is to have absolute confidence and can go back alive!

"Be careful."

Zhang Mingyu walked forward, and Ye Xuanfu reminded behind.

"Don't worry, I'm a professional." A flash of pride and pride flashed in Zhang Mingyu's eyes.

The place where the two of them settled was like a small island, surrounded by cold underground water, and only a stone bridge crossed it, leading to the road ahead.

"Let's go?"

"Wait a minute!"

Ye Xuanfu hurriedly grabbed Zhang Mingyu, his face was solemn, pointed to the pier of the short and simple stone bridge, and said, "There are words on it!" ”

On the stone pier, there are indeed two words engraved, which are very complicated and mysterious, and Zhang Mingyu can't understand them.

"If Sister Yanli is here, she must recognize it." Zhang Mingyu stared at it for a long time, but he had to shake his head, saying that he couldn't understand it.

"Gao Yanli, she's not there, but I recognize her." Ye Xuanfu said lightly, "This is the seal body of the pre-Qin Dynasty, which is similar to the small seal of the Qin Dynasty. ”

"Pre-Qin seal, is it really a building complex in the pre-Qin period?" Zhang Mingyu asked in surprise.

"I don't know if it's really a pre-Qin building, but the breath of the years revealed in the text is almost impossible to fake."

"So...... At least this stone pier belongs to more than 2,000 years ago! Ye Xuanfu looked up and said.

"What word?" Zhang Mingyu looked at Ye Xuanfu's eyes.

"What ......"

"What?"

"Nai Ho Bridge."

"What, what a bridge?!"

Zhang Mingyu jumped up in fright.

"What the hell is the bridge! No...... It can't really be that...... The legendary Nai Ho Bridge. ”

"Hehe, what do you think, how can it be the Nai He Bridge of the Netherworld, this stone bridge is just the same name." Ye Xuanfu replied.

"That's good, I'm scared to death." Zhang Mingyu breathed a sigh of relief, don't look at him cold and arrogant, in fact, he is most afraid of ghosts and supernatural things.

"What did I think I thought, let Ben Ye step across the Nai He Bridge and go to the other side!" Zhang Mingyu was about to step forward, and the soles of his feet were about to step on the bridge deck, when he suddenly stopped.

"What's wrong?" Ye Xuanfu asked.

"Something is wrong." Zhang Mingyu frowned, accompanied by Gao Yanli's years of archaeological experience told him that this foot could not be stepped on!

"No, no, there must be something wrong!" Zhang Mingyu then retracted his feet, and the expression on his face returned to his previous demeanor.

Zhang Mingyu picked up a stone from the ground, weighed it in his hand a few times, and threw it out.

"Bones"

The sound of stones rolling over the bridge deck was not loud, but it was particularly loud in the quiet and empty environment.

It didn't go far, and with a poof, the stone actually burned, and the green flames looked extremely terrible and gloomy, and the stone crackled and finally exploded.

Ye Xuanfu and Zhang Mingyu on the "shore" changed their faces slightly, and they suddenly looked difficult to see.

It can burn the stone, which shows the temperature of the cyan flame, and it is estimated that people will not even be left with ashes.

"What should I do?"

The two looked at each other, and for a while they didn't understand why the stone spontaneously ignited for no reason, and the temperature of the flame was so high!

If someone steps on it, even if it is the reborn Ye Xuanfu, he will definitely die, without the slightest accident.

"Try again!"

Zhang Mingyu found another stone and threw it over.

This time, both of them were looking with round eyes, for fear of missing any detail.

Unfortunately, it was still like this, the stone was rolling, and suddenly it spontaneously combusted, and the cyan flames swayed in the dark space, which was extremely terrifying.

It didn't take long for the stone to burst open in the scorching fire!

"How so?"

Ye Xuanfu and Zhang Mingyu were completely stunned.

Don't...... Did you get stuck in the first level, we didn't even see the shadow of the dungeon!

The two were extremely unwilling, resentful, and very ashamed.

If you say this, you will probably be laughed at to death, and you will be stumped at the first level.

Home?

No way!

Fang Cai's agreement was to finish exploring the dungeon and go back together, instead of not going yet, rolling back with his tail between his legs.

Having difficulties? Just get over it!

When Zhang Mingyu was about to throw another stone, Ye Xuanfu stopped him.

"Uncle?"

"Look at me."

Ye Xuanfu stepped forward, tore off a large sleeve, wrapped his fingers thickly, and then bent down to wipe it on the bridge deck.

There was no response at once.

Ye Xuanfu's complexion remained unchanged, and he wiped it a few more times, constantly rubbing on the bridge deck.

With a "brush", a cyan flame gathered, and Ye Xuanfu hurriedly threw off this sleeve to save himself from catching fire.

After a few breaths, the cyan flames fluttered, and Ye Xuanfu's sleeves turned into ashes.

If Ye Xuanfu slows down a little, the consequences will be unimaginable!

"What is this?" Zhang Mingyu looked at Ye Xuanfu suspiciously, waiting for his explanation.

"Well, I understand the principle, what should be smeared on the bridge deck, as long as there is enough friction, there will be that cyan flame." Ye Xuanfu said lightly, with a look of thought in his eyes.

As for what was smeared.

Ye Xuanfu tore off another long strip of cloth, wrapped it in his hand, and gently wiped it across the bridge.

This time, there was no need for enough friction, because Ye Xuanfu was just looking at what was smeared.

It is useless to look and smell, because what is above is colorless and odorless.

"Friction, colorless and tasteless, cyan flame ......" Ye Xuanfu frowned, always feeling as if he had seen it in that ancient book.

"Friction ......"

Ye Xuanfu thought about it, and rubbed the cloth with his hand again, but there was no response for a long time.

"Uncle, if it's coated with some kind of flammable substance, why won't the amount be reduced?" Zhang Mingyu said.

"Decrease?" Ye Xuanfu suddenly thought of something!

"By the way, I know, this is the pollen of the bone erosion konjac flower! This pollen, once mixed with ashes, produces a wonderful substance that works fine in a normal state, but if it meets a grinding stone and rubs it, it will give birth to a creepy flame! ”

"But...... Shouldn't the bone erosion konjac be extinct, why is there still here? ”

Ye Xuanfu patted his head and remembered it completely!

"Bone erosion konjac flowers?" Zhang Mingyu naturally hadn't heard of it, but listening to Ye Xuanfu's tone, it was definitely an extremely rare and ancient species.

"The pollen of the bone eroded konjac, plus the ashes, and a special millstone ......"

That's right, this stubby stone bridge is made of a special grinding stone.

"Now that we know the reason, is there a way to get there?" Zhang Mingyu asked.

That's the point!

"Yes! 100% sure! Ye Xuanfu said categorically! (To be continued.) )