After the collapsed wave function passed through the slit, Song Huiqin's consciousness also followed. I saw two cliffs in front of me, and in the middle was an abyss, and there was no road at all. Song Huiqin doesn't have a physical body now, just a stream of consciousness that comes here and can fly through the middle of the cliff, she has no weight, she is not affected by the gravitational pull of the earth, and she will not fall into the abyss. During the flight, Song Huiqin saw the old branches of the withered pine hanging upside down and leaning against the cliffs; The waterfall on the cliff is falling, and the whirlpool is turbulent in the abyss, competing for noise; The water and stones hit each other, and the sound was like thunder. Birds chirp in the ancient trees between the cliffs, and the sound echoes through the empty mountains. The eagle soared at an altitude of several thousand meters in the air, far from the altitude at which Song Huiqin flew. This situation is evidenced by Li Bai's poem "Shu Dao Difficulty":

Whoa, the danger is high! The difficulty of Shu Road is difficult to go to the blue sky!

Silkworms and fish, how dazed is the founding of the country! He is 48,000 years old, and he is not populated with Qinsai. There is a bird road in Xidang Taibai, which can cross the top of Emei. The earth collapsed and the mountain destroyed the strong man to death, and then the ladder stone stacks were hooked together.

There is a high standard of six dragons returning to the sun, and there is a return to the river with a wave and a reversal. The flight of the yellow crane is not yet passable, and the ape wants to spend his sorrow and climb. The green mud is a panpan, and a hundred steps and nine folds linger on the rocks. He sat on his back and sighed with his hands.

Q: When will you return to the West? The road is daunting and the rock is unclimbable. But when I saw the ancient trees of the Sad Bird, the male and the female flew around the forest. I also heard Zigui crying the night moon, and I was sad about the empty mountain. The difficulty of Shu Road is difficult to go to the blue sky, so that people listen to this withered face.

Even the peaks go to the sky and do not exceed the feet, and the dead pines hang upside down against the cliffs. The flying turbulent waterfall is noisy, and the cliff turns to the stone and thunder. The same is true of the danger, and the people who have come from afar are not here!

The Sword Pavilion is majestic and Cui Wei, one husband is the pass, and ten thousand people are not open. Guards or bandits, turned into wolves and jackals. Avoid tigers in the morning and long snakes in the evening; Grinding teeth and sucking blood, killing people like numbness. Although Jincheng is cloudy, it is better to return home early. The difficulty of Shu Road, it is difficult to go to the blue sky, and look sideways to the west!

Flying over the double slit of the cliff, Song Huiqin saw bullets flying in the sky. It's really strange that before the double slit, what she saw was a mass of fluffy white clouds of wave function, why did the wave function turn into a bullet after the double slit? She finally remembered that the wave function had collapsed after passing through the double slit and had become a "particle" instead of a "wave". Song Huiqin was flying, but the bullet made Song Huiqin helpless, and she didn't want to hurt half of her hair. Why is that? It turned out that Song Huiqin's stream of consciousness was in the fourth-dimensional Planck supernatural space, and it was not in the same dimension as the particle-like flying electrons at all. From the perspective of the three-dimensional space where the electrons are located, the fourth-dimensional Planck supernatural space where Song Huiqin is located has curled, with a size of only 10 to the 33rd power, how can a bullet hurt her? Just as a mosquito flies in the air, a mighty anti-aircraft gun does not necessarily kill a mosquito. Song Huiqin flew in the rain of bullets, very safely, and after a while, he came to the two bright lines on the screen.

These two bright lines correspond to the double slit behind the baffle, and the electrons keep flying over and hitting inside, and the bright lines are getting brighter and brighter. Song Huiqin came to the edge of the bright lines, where can I still see any bright lines? The streak has become a trench. In the distance, bullets flew and smoke filled the air, and rows of soldiers lay in the trench, which was a trench. Soldiers heroically fired bullets into the opposing trenches, and there were casualties on both sides, and soldiers were constantly wounded and fell.

There were also double-slit electrons that landed in the middle of the two trenches, transforming into a sand dune. I saw that the terrain of this sand dune was constantly undulating and changing, and it was flat just now, but now a mountain peak has risen, and four mountain roads have appeared in the peak, numbered A, B, C, and D. Anyone who has fought a war or watched a war movie knows that the battle for the high ground is crucial to the outcome of a war. Sun Tzu's Art of War has a cloud: know yourself and know your opponent, and you will not be defeated in a hundred battles. The high ground allows for a better view of the enemy's movements, making it easier for the commander to make decisions accordingly. The high ground is easy to defend and difficult to attack, and seizing the commanding heights can effectively suppress the enemy's firepower, and the enemy who fights cannot raise his head.

The mountain has four mountain paths, and neither of the warring sides knows where the mountain road leads. There may be only one path that is correct and leads to the commanding heights, and the other three trails are all designed to confuse the enemy, and as in the four options in the exam questions, there is only one correct answer.

"Sir, which mountain road shall we rush up from?" A soldier in the trench where Song Huiqin was located asked.

"I don't know much about the terrain, we can spread our forces and rush up, there is always a right path." The prefect said.

"If the enemy concentrates his superior forces and chooses a correct mountain route to attack, and we disperse our forces, we will be annihilated when we encounter them." The soldier said.

"The question is which path should you take?" The chief asked.

"Shall we send a few soldiers to scout?"

"It's too late, if the enemy has already rushed up and occupied the commanding heights, it will be useless for us to detect it." The prefect said.

Song Huiqin knew that the correct choice of the mountain road was related to the victory or defeat of the war. She is now in the trenches here, and it is her duty to be one of them, and she wants to help them. Song Huiqin activated his thoughts, and his body flew into the air and came to the top of the mountain. She perceives that mountain roads A, C, and D are all dead-end roads, and there is no road halfway through, and only mountain road B can lead to the commanding heights. Song Huiqin already knew that the answer to this multiple-choice question should be B.

Song Huiqin returned to the trenches and told the commander the answer, but the commander couldn't hear it. It turns out that the chief can only receive information from the outside through his eyes, ears, nose, tongue, skin and other organs, but Song Huiqin is now in a state of consciousness, which is different from the spatial dimension of the chief, how can the chief know? Song Huiqin's consciousness flew around the chief's brain, aimed at his Yintang acupoint, slammed into the nervous system in his brain, and told it the answer, the chief was like an enlightenment, and shouted: "Comrades, listen to my orders and attack Mountain Road B!" ”

It turned out that this Yin Tang Cave was a channel for mortals to communicate with the fourth-dimensional supernatural space. The mortal has three fires, one on his head and the other two on his shoulders. Some people are not strong in yang fire, have heavy yin qi, and are easy to run into evil spirits when walking at night, and this ghost enters the mortal body through the Yintang acupoint.

The soldier didn't know why the commander suddenly made up his mind to choose Mountain Road B, but the commander's order was sonorous and confident, who would dare to disobey? The chief didn't know why he gave this order, he just told him by inspiration, or the sixth sense, that Mountain Road B was correct. In the midst of the fierce charge, the soldiers rushed to the mountain road B, and advanced along the mountain road, where they met the opposing soldiers, whose strength was only a quarter of their own, and annihilated them all without much effort. It turned out that the other side chose the way to disperse its forces, and its own side was concentrating its forces to attack Mountain Road B, how could the other side not be defeated? The soldiers rushed to the top of the hill to occupy the commanding heights, only to find that the other soldiers of the opposing side had lost their way and were defeated without a fight.

"I will only go all the way according to the principle of how many ways I come", the commander of Song Huiqin's side finally defeated the enemy according to this principle. In the historical battle of Sarhu, Nurhachi won the victory with this method of warfare. In the third year of the Later Jin Mandate, Nurhachi sued the heavens with the "Seven Hatreds" to ask the Ming Dynasty for his crimes, and occupied Fushun and Qinghe, causing panic in the Ming Dynasty. In order to strangle the Later Jin regime, the Ming Dynasty sent 100,000 troops to encircle and suppress Hetuala. Nurhachi adopted the tactics of "relying on a few roads, I will only go all the way", concentrated the superior forces to break through, first in the Sarhu battlefield to inflict heavy losses on the Ming army on the east road, and then at Shangjian Ya and Abu Daritong to deal a fatal blow to the Ming army, the four Ming troops were annihilated on three roads, and fled all the way, with nearly half of the dead and wounded. History calls this war the "Battle of Sarhu".

"Victory! Victory! Amid the cheers of the soldiers, Song Huiqin also heard a cat meow, and then woke up from his sleep. She saw the old man and his assistant in the lab standing by her side.

"Woke up? That's great! The old man said.

"What's going on?" Song Huiqin asked.

"Through your conscious participation in our electronic double-slit experiment, we have completed two experimental tasks. First, experiments have shown that human consciousness can cause the wave function to collapse. So you see the pre-collapse white cloud wave packet before passing through the slit in the cliff, and the collapsed bullet after passing through the slit. Second, we noticed a few days ago that you have a strong desire and awareness to pass the CET-4 exam, so we invite you to come to the lab. You may pass the exam or you may not pass, there is a certain probability of passing or failing, which is also a probability wave, which is a wave function. During the experiment, your consciousness caused the wave function to collapse and show that you could pass. The old man said.

"I didn't take the test in the experiment?" Song Huiqin asked.

"Haha, the mountain peak that appeared in the experiment, there are four mountain roads, you chose the correct mountain road B, in fact, this is the multiple-choice question in the college English test you took Level 4, your answer is correct, which trench you are in The army won the battle, which means that you have won, and your English Level 4 will definitely pass." The old man said.

Song Huiqin was suspicious, and when she checked the results, she really passed the college English test level 4 at one time, which is a later story, it seems that the old man's experiment is not nonsense.