After the agreement, the three people no longer talk. Chenshuirou sits next to fengzimo and meditates silently. People are really strange animals. Even if she just sits next to fengzimo, she feels very safe and soon enters a deep state of meditation.

India ruthless looked at the dust water soft wind son Mo, shook his head, and then slightly let, don't know is to give them two people to leave a little space, or feel lonely.

Fengzimo soon settled down, but his mind dispersed and he was alert to the movement around him. After all, it was very close to the other courtyard in the west mountain, and it was not absolutely safe.

Dawn is coming, the stars in the night sky gradually fade away, and it's the darkest moment. Wind son Mo suddenly open eyes, a fine awn flash.

"Shuirou, elder martial brother, let's go!" Fengzimo called softly. A moment later, the three figures passed through the forest like ghosts and came to a valley more than 4000 meters away from the West Mountain courtyard.

The valley is not very open. At the bottom of the valley, a stream less than one meter wide flows by. The peaks on both sides are only one or two hundred meters high. The hillside is covered with shrubs. It's a small valley so common that it can't attract anyone's interest.

"Here it is! Let's go up! " Fengzimo points to the hillside on the left side of the valley, and a slightly protruding boulder on the hillside, where fengzimo looks good in the daytime.

The wind son Mo jumped up the huge stone first, the dust water is soft, the seal is merciless also jumped up behind. I don't think it's very big down there. I didn't expect that it's not crowded for three people to stand up.

"Hurry up and start!" Wind son Mo said a, immediately took out the pick and space ring began to dig up, they want to grab before dawn to make a hiding space for themselves. The iron pick is specially prepared by fengzimo. Since he dug a hole in Zhenlong's secret place, fengzimo also likes the feeling of pitching people.

Chen shuirou is concentrating on the preparation of the array materials, but he doesn't care about the two of them, but he is merciless and Fengzi

Mo rotation, the progress of excavation is very fast, full excavation, less than half an hour has been deep into more than 20 meters.

Because he had to stay in the underground cave for nearly two months this time, Feng Zimo had already thought about building a cave for rest here, and then building a cave every 500 meters. Although it would take a little time, it would be much more comfortable for people to stay in it.

Seeing that the depth is enough, chenshuirou also takes the time to enter the cave and begins to arrange the hiding array. After the arrangement is completed, they will not come out until the real dragon's secret place is opened. In the following days, before the death of the lurkers, they were night walkers, assassins and killers. They tried every means to kill them.

It's also wonderful to say that the soul practitioners were supposed to lurk in the dark. Unexpectedly, a slip happened and they ran away from fengzimo. They became the light place in the eyes of fengzimo and others, from the lurker to the prey.

Waiting for the dust and water to arrange the array, fengzimo and yinmerciless have already built the first stone room. Fengzimo also takes out the tables, chairs and benches from the space ring and arranges them.

After setting up the tables and chairs, fengzimo simply put on the tea set and began to cook tea. He called yinqinghe and chenshuirou to have a drink.

"Brother Mo, there's something I haven't thought about all the time. Please teach me!" Chen shuirou took a sip of tea and asked.

"Why not?" The breeze son Mo concerns of ask a way, print ruthless also some eight trigrams of looking at dust water soft.

"I want to know how you orient yourself underground?" The dust water soft blinks big eyes to ask a way, estimate is in true dragon secret place to start to ponder this problem. The cave is dug underground, and the divine sense can't penetrate it. How can we determine the direction and distance of our own excavation.

"Ha ha, this is a unique skill!" Fengzimo said with a smile, in the underground positioning, we need to use not only divine knowledge, but also the scientific and technological knowledge on earth“ Come on! People are so anxious! " Chenshuirou shakes fengzimo's arm and says reluctantly. Now that they have asked, of course, we have to make this question clear. After thinking about it for so long, I feel itchy.

The wind son Mo put soft body, very enjoy of shake neck, for a long time just interface way: "good, I say, I say! Two more shakes and I'll fall apart. "

"Say it Dust water soft loose open hand, open big eyes waiting for wind son Mo explanation.

"Actually, it's very simple. What do you think it is?" The wind son Mo took out a not too big energy crystal stone from the space ring and handed it to the dust water soft.

"Isn't this an energy spar?" The dust water soft turned over and looked, didn't find any special place, casually threw to one side, the same monkey impatient monkey impatient waiting for the answer.

India ruthlessly took it in his hand and looked at it for a while. He didn't find any difference. It was a common energy crystal.

"Look carefully, but don't just use your eyes!" The wind son Mo reminds a way.

Not only with eyes, but also with divine sense. At this moment, Yin merciless and Chen shuirou used divine sense to perceive the energy crystal several times before they said, "nothing special. At most, it's just that you infuse some energy."

"The key is in these energies." Fengzimo took the energy explanation in his ruthless hand, and then explained: "this is filled with my energy. Although the earth has the function of blocking the divine consciousness, there is no obstacle for the divine consciousness in the cave, so as long as I put two such energy crystals at a certain distance from the entrance of the cave, I can't enter the direction of the West Mountain courtyard, Even the distance can be accurately located and accurately calculated to meters. "

"To the meter?" Dust water soft surprised said, she thought just can have a basic direction.

"But I still don't understand. How can I pinpoint it?" India is also a heartless young man with a strong thirst for knowledge.

"Do you understand why I dug the hole obliquely just now, instead of directly facing the other courtyard in the west mountain?" Although fengzimo was not a good student of both character and learning when he was on the earth, he was only good at basic mathematics and physics. However, he was still at a loss when he was hard pressed and soft in dust and water. The more he listened, the more confused he was. How could a piece of energy crystal become the key?

The wind son Mo see mouth say don't understand, take out the pen ink paper inkstone from the space ring to start the scene teaching.

"You see, just now when we were standing in the valley, I could accurately perceive the distance between the two energy crystals, and then we dug a hole in this direction. I placed one such energy crystal in the cave entrance and the stone chamber, and I knew the distance between the two energy crystals, and the distance between each energy crystal and the West Mountain courtyard, So I have a basic care in my heart. Then, as I continue to dig forward, as long as I feel the distance between the two energy crystals, I can infer what position I am in, and the distance can also be calculated. "

Fengzimo explained that he was making a picture to print the wisdom of ruthlessness and softness. Although he was not proficient in it, he understood it vaguely. After all, in the Hunyuan world, there was Pythagorean theorem, but its application was still relatively superficial.

Chenshuirou got the answer and stood there pondering for a long time. Then she took up the pen to write and draw. After some calculation, she finally patted her thigh and yelled: "brother Mo, you are a genius. You want to get this way."

Fengzimo really wants to say: "when my elder brother was born under the red flag and grew up in the spring breeze, this small problem must be that he would pull when he was young. This is at most the level that most junior high school students should have." But seeing the worship of Chen shuirou, he can't explain it. Even if he says something, it's hard for Yin Qingren and Chen shuirou to understand and believe it. At this time, what Feng Zimo misses most is Hu Xinyue and Mu Junyao. That kind of common language can't be understood by others.

"Ha ha, it's nothing to worry about. Compared with shuirou's array skill, it's nothing!" Wind son Mo modesty said, also don't forget to return it with Li's flattery for a while dust water soft.

"Although the array is exquisite, it's all borrowed from thousands of people, and there's nothing to praise. This method of measuring distance and positioning is absolutely unheard of." Chenshuirou is still proud of her husband Mo brother.

Fengzimo can't explain any more. This is actually the combination of mathematics and mathematics on earth and the divine sense of the world of cultivation. Both are indispensable. It's really wonderful to think of. I don't know if the divine sense can be used to develop something similar to GPS positioning.

After listening to their conversation, Yin mercilessly began to read: "fengzimo, you are so shameless. No wonder you have so many wives and shuirou is so pure. You have the heart to cheat."

Wind son Mo see India merciless eyes, immediately also can guess what he is thinking, so not only did not convergence, but also with dust water soft very exaggerated to India merciless do a show hand action. Body language is absolutely the universal language in the whole universe. As soon as you see it, you can understand the meaning of fengzimo and gnash your teeth.

It's not that Yin merciless doesn't want to fight back with words, but often he doesn't know how to say it. He will come out to help or comfort. He doesn't need fengzimo at all. With more times, Yin merciless can only give up. He will swallow his teeth and wipe his tears secretly

With the good rest conditions of the stone room, the three people had a good rest without much time. Then, he continued to dig holes. Although he was a little bit subdued and kept digging holes under the ground like a hamster, this method of war has achieved brilliant results in the real dragon's secret land, and no one has ever used it in the Hunyuan world. This is a good opportunity to use this method of war to achieve great success!

Those soul practitioners may have a conclusion, so it's not easy to use it in the future.