Yan Xu walked about ten zhang and stopped slightly north of the center of the cave. Lin Yiren's starry eyes scanned around, and found that there was nothing around except for a few irregular mountain rocks in front of him.

"Look at the top. Yanxu seemed to know that Lin Yiren was confused, and he seemed to be saying to Shen Yunpeng.

A streamer of light once again streaked across the dark sky, like a bright moonlight in the night...... On the top of the cave, more than 10 irregular arcs are extremely eye-catching, between the arcs and the intersection of the arcs, there are nine raised mountain rocks, although it is not special at first glance, but against the backdrop of the arcs, it seems that someone deliberately did it.

"This is ......" Lin Yiren suddenly felt dizzy, and the arc on the top of the cave suddenly increased by more than ten in the blink of an eye.

"What you see behind is all hallucinations, just remember the arcs and rocks you see at first glance. The voice of Yan Xu sounded in his ears, and Lin Yiren immediately retracted his gaze, secretly surprised by the strangeness of the layout of the five dragons.

"How does this formation compare to the Hanging Star Array of Xiling Palace?" Yan Xu said this, obviously asking Shen Yunpeng.

"It seems to be the same path as the Vertical Star Array, but it is not an unprecedented formation. Shen Yunpeng waved his sleeves and withdrew the Black Flame Stone, and said coldly.

"So, as long as this is the basis, you can find the keyhole that opens the next bracket?" said Lin Yi.

"Yes," Yan Xu bowed, "The nine mountain rocks imply the nine caves of the Nine Xuanfeng Peak, and the mountain rocks corresponding to this cave mean the eastern part of the new five elements. ”

"Alfalfa is wood, green is wood, wood is east......" Lin Yi muttered, recalling the situation when he first entered the cave, "If the wood line of metal, wood, water, fire, and earth has been determined, then by analogy, you can get the four elements of gold, water, fire, and earth, and the earth line in the center should be the location of the keyhole." ”

"The prince can understand it at a glance, and it's a pity not to learn the art of Qimen Dunjia. Yan Xu said and walked five steps to the right front, "This place corresponds to the mountain rock above, it is due east by the five fingers of the dragon, and the three directions of the west, south and north have been clear, and now you only need to calculate the distance between the four directions according to the arc of the top of the cave, and at the intersection of the east-west and north-south lines, you can find the keyhole embedded in the Wuyu Ling." ”

"Why bother," Shen Yunpeng said impatiently, "Since the keyhole is in this hole, just sweep away all these obstructive rocks." "Say that, and wave your palms out.

"No!" Lin Yiren stopped Shen Yunpeng as quickly as the wind, "The machine can be opened, or it can be locked, Long Wu will never give the intruder a chance to take advantage of, in case he turns around and finds the keyhole, but the central component of the opening machine is destroyed by the young palace master, won't today's trip be a failure?"

"Then you guys are looking for it!" Shen Yunpeng withdrew his hand, walked to the side, and sat on the rock with his legs crossed.

"The Hanging Star Array pays attention to confusing the line of sight in the chaos, but it is not irregular, what clues might the prince find from those arcs?"

A trace of doubt flashed through Lin Yi's heart...... Among the three of them, he was the only one who didn't know the formation, and the time was so short, why didn't Yanxu make a quick judgment by himself, nor did he ask Shen Yunpeng about the relationship between the arc of the cave top and the vertical star array, but let him guess the distance between the four directions of east, west, north and south?

Although he thought like this, Lin Yi said silently, "The mountain rock above Yan Gongzi's head is about two zhang away from the arc directly opposite. ”

"How long is the arc itself?" said with a hint of weakness in his voice.

"About three feet. Lin Yiren looked at Yan Xu.

The clear light of the black flame stone reflected Yan Xu's pale face, and the figure that was as strong as a strong bamboo trembled slightly at this moment, as if he was enduring the pain from the bottom of his heart.

Could it be that at such a critical moment, the backlash of Yan Xu's cultivation of the Blood Shadow Divine Skill actually scurred up again? The Lin Yi people were like being doused with a basin of ice water, and they were cold from the inside out.

Shen Yunpeng clearly came with the Bone Immortal Grass, if the three of them turned around and opened the Nine Xuan Cave, but Lin Yiren and Yanxu couldn't restrain Shen Yunpeng, whose hands would the Bone Immortal Grass end up in, it was really uncertain.

Lin Yiren glanced at Shen Yunpeng...... The only way at the moment is to prevent Shen Yunpeng from being aware of Yanxu's abnormality, as long as Shen Yunpeng has scruples about Lin Yiren and Yanxu joining forces, he will definitely not do too much, so that the three of them will have the opportunity to leave the Nine Xuan Cave peacefully and find another time and place to discuss the matter of the Bone Immortal Grass.

"Two zhang, three zhang...... That's a zhang. Fine sweat continued to ooze from his forehead, but he still tried to control his body that might fall to the ground at any time.

The little fan, the little girl who was running towards him from afar, actually laughed and passed by him, and plunged into the black whirlpool behind him...... He must not let the Bone Immortal Grass fall into the hands of Shen Yunpeng, that is the only hope for his little fan to live.

The corner of his robe turned to powder in great pain, and every meridian jumped wildly, about to shatter what little clarity and sanity he had left.

Lin Yiren thought for a moment, not knowing why.

"Yan Gongzi is deliberately testing this king?" Lin Yiren walked to Yan Xu's side without hurrying, turned sideways to block Shen Yunpeng's sight, and gently patted his palm to the back of Yan Xu's heart seemingly unintentionally.

The back heart is the lifeblood, and now as long as Lin Yiren's true anger is shocked, Yan Xu will definitely die on the spot. Maybe if it weren't for Lin Yi, Yanxu would never let others have a chance to get close, or maybe Yanxu had no other choice at the moment, because except for Lin Yiren, no one could be like him, doing everything to get the Bone Fairy Grass, just to save Gu Xiaofan wholeheartedly.

The delicate relationship between Lin Yi and Yanxu is also friend and foe, and when the true qi in the hands of Lin Yiren smoothly enters the Yanxu meridian, it turns into an indescribable tacit understanding, which is the trust established by Gu Xiaofan, invisible and invisible, but much stronger than the high-sounding oath.

The gentle and pure true qi diluted the scorching pain in his body, and his heart suddenly relaxed, and his already blurred vision gradually became clear.

"The prince can regard the arc as a curved bow arm, and the place where a certain place is the place where the bow is opened, and the distance between the two can be regarded as an invisible arrow......"

Lin Yiren couldn't help but look up at the top of the cave again. This glance is even more frightening, the arc of the cave top is like a dense eagle's nest crisscrossing in the extremely dim light, and it is no longer possible to distinguish which one is real and which one is false, only the nine mountain rocks are still in place, and nothing has changed.

Yan Xu felt the fluctuation of Lin Yiren's true qi, and paused slightly, "The prince must first find the arc that is one zhang away from the place where the bow was fired and parallel to the arrow. ”

Lin Yiren lowered his eyes slightly, and recreated the first few arcs in his mind, "And then?"

"Directly opposite the center of this arc, is there an intersection of two arcs?"

"Yes. "The mind of the Lin Yi people is at the intersection of two arcs to the southwest.

"What is the distance between the two?"

"About four feet. "Lin Yi is humane.

"If two places are connected, how long is the arc directly opposite their center, and where is it?"

"It is about six zhang long and is located in the southeast. ”

"Okay!" Yan Xu looked happy, "The difference between the southern fire line and the eastern wood line is six zhang and four zhang, can the prince remember this method?"

"The distance between the southern fire line and the eastern wood line is two zhang ......," Lin Yiren snapped his fingers and closed his eyes, and quickly calculated the distance of the arcs in his mind, "If every step is deduced according to this method, the distance between the western gold line and the southern fire line is four zhang, and the distance between the northern water line and the western gold line is five zhang." ”

The wind lifted lightly, and the gravel in the cave rolled one after another, and in a short time, three gravel piles formed nearby.

"The east, west, north and south are diagonally connected, and the intersection of the two lines should be where the keyhole is located. ”

As soon as the words fell, a crimson figure jumped up...... The rock where Shen Yunpeng rested before was actually located at the keyhole that Yanxu said.