Northern Abyss Immortal Clan

　　In a hurry, Wang Daoyuan thought of the physics knowledge he had learned in his previous life.

　　, after all, is highly educated. From the beginning of junior high school, physics has been studying sound waves, and he is still studying sound waves until the university, so he doesn't know anything about sound waves.

　　 It's just that the laws of this world are not exactly the same as those in the previous life. When he was a child, he also tried to use the chemical knowledge he learned in the previous life to do things, but without exception, they all failed.

　　 For example, he once wanted to generate lightning symbols by generating electricity. As a result, the world cannot generate electricity at all.

　　 In this world of cultivating immortals, it seems that the principle of matter is different from the previous life.

　　 Therefore, he has no idea whether the knowledge of weakening sound waves he has learned in his previous life can be used in this world. However, at this time, there is no other way, but a dead horse can be a living horse doctor.

　　According to the knowledge learned in previous lives, sound transmission needs a medium.

　　 Like air and water, but the sound transmission across the medium will lose a lot of energy. The greater the difference between the density of the two media, the more the sound energy is lost, and the less energy, the sound will naturally be smaller.

　　 For example, there is someone riding a horse in the distance, and the sound coming through the air is completely inaudible.

The sound spreads better on the ground. The sound of horseshoes can be clearly heard when the ears are on the ground, but the ears cannot be heard when the ears are off the ground. This means that the sound spreads from the ground to the air, and it spreads across the medium, and energy is lost , The sound is too small for human ears to detect.

　　 As for the specific principles, it has been several years since I graduated from university in my previous life. I have forgotten about it after another 20 years in this life.

　　 However, it is not important to know the principle, the important thing is to know what to do.

　　 If he can condense aura and transform it into an entity, he can create an earth ball to wrap himself up. Unfortunately, the magic talisman he refines is not of this kind.

　　The armor condensed by the earth armor talisman, the golden armor talisman, and the water dragon armor are also in the state of aura, not an entity. The only non-gas he can condense is the water ball.

　　Wang Daoyuan made up his mind to take a gamble. If he could weaken the sonic attack, he would kill the old thing. If it was useless, he would directly use the second-order middle-rank magic rune to escape.

　　 Operate the water spiritual power, control the water in the dark river under your feet, and form a water ball. This water ball is not tightly wrapped around the body, and there are some gaps between him and his body.

　　 A layer of water polo, he was still worried, and once again condensed a larger water polo and wrapped it outside.

　　 There is a half-foot gap between the two layers of water balls, which is full of water aura.

To pass the bell, it needs to pass through the air, travel to the outer water ball, then from the outer water ball to the gap between the two water balls, then to the inner water ball, and finally to the air between the person and the inner water ball. He can hear it.

　　 If this principle is useful, cross the medium four times in a row. It is estimated that the bell has reached the ears, and there is no fart sound.

　　 Wang Dao far not only didn't step back, but also took a few steps forward, as if he wanted to do something.

　　 The black robe old man once again controlled the yellow bell to make a sound.

　　 To be cautious, Wang Daoyuan still took a few big steps back to avoid this principle being invalid, he was directly hit by the sound wave, and he didn't even have a chance to escape.

　　 The two are no more than ten feet apart, and the bell will soon arrive.

　　 The outer layer of water ball was shaken by the bell to produce water splashes. The entire layer of water ball seemed to boil, while the inner layer of water ball had only small ripples.

　　 The sound reached Wang Daoyuan's ears, just like listening to a bell dozens of miles away. If you don't listen carefully, you can't hear it at all.

　　 This principle works, Wang Daoyuan is particularly happy: "Sure enough, there is no fart, old boy, wait for I to beat you alive."

　　 The black-clothed old man saw that Wang Daoyuan was not affected by the bell at all. He couldn't believe it. He urged the yellow bell several times, but it still didn't work at all.

　　 On the contrary, he himself continuously activated the magic weapon in a short period of time, and his body received the force of a counter shock, and he vomited blood.

　　 After a few breaths, Wang Daoyuan has come to him.

　　The black-robed old man asked in horror: "How can you not be affected by the bell?"

　　 Wang Daoyuan didn't reply, he directly cast the water dragon technique, and a water dragon appeared, entangled Huang Zhong.

　　 The water dragon flew towards him with Huang Zhong. He took the Huang Zhong and sent it directly to the Lingzhu space.

　　 Even if there is a connection between the black-clothed old man and the artifact, there is a space, no matter how great you are, you will not be able to sense the yellow clock, let alone urge it to move.

　　 relieved the greatest threat, the kingly way dispersed two layers of water polo, the water dragon technique once again turned into a water dragon armor, plus the golden armor charm and soil armor charm, I am not afraid of what this injured old boy can do to himself.

　　 He knows that the villain died because of the iron law of talking. Although he is now a decent person, he has to hold his hand and send the old boy back to the west.

　　 took out the Xuanyang sword, without saying a word, it was a sword smashed.

　　 The black robe old man didn't know if he was injured or what happened. He was terribly weak. He couldn't escape this simple sword, so he could only stagger his head in time.

　　 The sword is slashing on his left shoulder.

　　 Although the Xuanyang sword is not very sharp, it also depends on who is cutting it. It is almost meaning to cut pythons and crocodiles with thick skin and scaly armor, but it is really like playing with this old boy.

　　 With a sword down, the black-robed old man was almost chopped in half. Without much struggle, he belched.

　　 Wang Daoyuan did not choose to search for good things on his body. After killing the enemy, he searched on the spot, which was too easy to be conspired.

　　 The defensive charms and water dragon armor are still on his body~www.wuxiahere.com~ He brought up the corpse of the old man in black robes and wanted to take away his storage belt.

　　 Suddenly, a spirit beast bag on the waist of the black robe old man untied on its own, and a young casual Xiu ran out of it.

　　Wang Daoyuan grabbed him and asked, "Who are you? Why are you here?"

　　 Without saying a word, he turned around and fled.

　　 This hidden weapon is exactly the kind of needle-shaped magic weapon hidden in the black smoke when the old black robe spit black smoke.

　　The needle hit Wang Daoyuan's soil armor talisman, and the soil armor phantom shook slightly. This power was far worse than the black robe old man used.

　　Wang Daoyuan didn't bother to talk nonsense with him, so he chased him directly, slashing his palm on the back of San Xiu's neck, and San Xiu fainted immediately.

　　 After all, he is just a second-tier qi training guy. He wants to be a demon in his own hands, so let's dream.

　　 At this time, the corpse of the black-robed old man was still being carried in his hand.

　　Wang Daoyuan directly opened the three spirit beast bags on his corpse and made sure that no one or beast was hidden in it, so he put the three beasts inside and put them into the spirit beast space together with the storage bag.

　　 Then put the corpse of the black robe old man into a storage bag and hung it on his belt.

　　 Huang Zhong was still in the spirit bead space, and when he was not sure whether the old boy had a back hand, he threw the corpse directly into the spirit bead space. It was impossible to guarantee that he would not be shamed by the back hand left by the old boy.

　　 In case, a casual cultivator sprang out from there again, directly controlling Huang Zhong, and when Wang Daoyuan's divine consciousness enters the space, give him a look.

When 　　 Divine Sense enters, it is attacked by Huang Zhong, which may involve the soul.

　　 Be careful to sail the ship for ten thousand years. Even if you have the winning ticket, you still have to hold your hand. It doesn't matter if you are a little troublesome. If you are careless, it is really unstoppable.