This is Li Bai's "Shu Dao Difficulty" to describe the sentence of the sword gate pass, the terrain of the sword gate pass is high and dangerous, one person guards the pass, even if it is tens of thousands of people, it is difficult to enter.
Today we also use this phrase to describe a single volunteer soldier on the Korean battlefield.

Tan Bingyun
He single-handedly held off the American cavalry with a single gun, grenade, and explosives, successfully allowing enough time for the retreat of the other volunteers.
Do you believe that one person is enough to resist the strength of a division of the US army and withstand the most difficult eight hours?
Where did the strongest individual soldier in this volunteer army come from? What kind of super ability does he have to resist the strength of a division?
Finally, at the end of the Korean War, Banshi was also received by the chairman when he returned to Korea.
Tan Bingyun
In his early years, he was poor and joined the People's Liberation Army
Tan Bingyun was born in 1923 in a small county town in Jiangjin District, Chongqing (formerly Jiangjin County, Sichuan), to peasant parents.
Tan Bingyun has always been very sensible, at a very young age, he has learned to share the housework for the family, but also the children of the poor have been in charge of the family, from a young age to others to herd sheep to work, can earn a meager salary to subsidize the family.
At the same time, he has also been subjected to a lot of unfair treatment and exploitation, often hungry, desperate efforts can only be to survive, but this also indirectly cultivated his strong and brave, hard-working spirit.
Tan Bingyun
In 1948, the People's Liberation Army came south to his hometown, and since then his eyes have been more than a light, and he has made up his mind to join the People's Liberation Army, determined to get rid of his current life and change his face again.
Tan Bingyun, who joined the People's Liberation Army, seized every opportunity to fight, fearless of strong enemies, and rushed to the front every time he fought, giving full play to the hardships and stand hard work he had cultivated since childhood.
It is precisely because of this spirit that he has always influenced other people in the army, and he can still win victories and successfully escape in the case of repeated encounters with the enemy's encirclement.
In the second year of joining the army, Tan Bingyun followed a large army to participate in the liberation of Shanghai.
Tan Bingyun
At that time, in order to cross the river, when the troops needed a pontoon bridge, it was also he who volunteered to lead everyone to build wooden planks in the water and finally successfully crossed the river.
In this battle, he put his life and death aside, risking being killed by the enemy at any time, and resolutely jumped into the river to build a pontoon bridge for his comrades.
At that time, he only had one thought in his mind, that is, to let his comrades cross the river safely, no matter how difficult and dangerous it was, he would always rush ahead.
Although Tan Bingyun's experience at that time was still lacking, his spirit was commendable, brave and courageous, and he solved many obstacles and problems for the troops, so after the battle, he was also awarded the third class merit.
Tan Bingyun
For him, the recruit has already received a third-class meritorious service award in less than two years, what kind of honor it should be, which also inspires his inner desire to make meritorious contributions and serve the country faster.
Tan Bingyun originally thought that after the end of the Liberation War, China would no longer fight any more wars, the people would not be displaced on a large scale, and he could finally return to his hometown to be an ordinary peasant and live an ordinary and happy life.
However, the Korean War came so unexpectedly that before he could retire from the army, he responded to the call of the state and voluntarily joined the volunteer army to resist the United States and aid Korea, and together with the DPRK resisted the intrusion of the outside world.
Only this time it was not to fight the Japanese, but to compete with the Americans with advanced equipment and weapons, he not only did not flinch, but with a hint of excitement, thinking that the opportunity to make a contribution was in front of him.
Korean
On the Korean battlefield, Tan Bingyun also maintained his consistent style and momentum, in the face of the bloody storm on the battlefield, he did not know what it was to be afraid, the more courageous the Vietnam war, and rushed forward without a life.
When he advanced in the face of artillery fire, not only was he not hit by the enemy's bullets, but he also let him shine on the battlefield, so that the enemy troops on the opposite side also looked at him and did not dare to act rashly.
Tan Bingyun made a lot of hard contributions in this campaign and won the special attention of his superiors.
Tan Bingyun
Battlefield heroes, single soldiers
In May 1951, the fifth campaign was already in its final stages, and after the first few encounters between the two sides, the commander-in-chief of the United Nations army became Ridgway.
After Ridgway took office, he made a full analysis of our army's line and the previous campaign situation.
At the same time, it also seized on our weaknesses, knew that our logistical support could not keep up, thought of cutting off our supplies, and started a wheel war with us.
Ridgway
However, Ridgway's motivation has been detected in advance by Mr. Peng Dehuai, not to mention that the supply problem has always been our hidden danger, and naturally we will pay special attention.
At this critical juncture of the two sides' engagement, Mr. Peng could only order the troops south of the Northern Han River Defense Line to be quickly withdrawn.
But Ridgway had already sent a large number of air forces to blow up our retreating bridges and cut off our retreat.
At the same time, the volunteer army also received orders from the headquarters to withdraw to the north and cross the river in danger.
Peng Dehuai
In order to cover the retreat of the large troops, Tan Bingyun also volunteered to come to a highland in Jinhua City, code-named 390, in order to block the US tank troops here.
And he also wrote his highlight legend here.
On the night of May 24, Tan Bingyun and another warrior, Mao He, built fortifications near Highland 390 overnight, while he was also carefully considering the plan to block the enemy.
He knew in his heart that this battle was not to meet the enemy head-on, but to find ways to delay time in the shadows, hinder the pace of American tanks, and buy more time for other volunteer troops to retreat.
The time spent waiting in the foxhole passed minute by minute, and the sound of tanks rumbling was getting closer and closer.
At this time, Tan Bingyun gestured to Mao He, signaling him to go first, waiting for the time to be ripe, and then use anti-tank grenades to crush the enemy tank troops.
Tan Bingyun's heartbeat jumped faster and faster as the tank approached, and he mentally estimated the distance between him and the tank, silently waiting for the tank to enter the attackable range.
After the tank approached, Tan Bingyun pulled the anti-tank grenade at the first time according to the rhythm of the previous training, and then threw it at the tank.
The grenade was accompanied by a loud bang after landing, and the flames soared into the sky, but the tank did not stop.
It turned out that the grenade that Tan Bingyun had just thrown out was out of position from the target location, and only exploded the lighting of the tank, and did not cause damage to the main body.
If one move does not hit, then another move, Tan Bingyun, who stood up, can not care about his own safety now, quickly took out a second grenade, and threw it at the tank again.
This time, the first tank was successfully destroyed, but because the lethal range of the grenade explosion was too wide, Tan Bingyun could not dodge it, and he directly fainted on the spot.
Another soldier, Mao He, ran to Tan Bingyun at the first time, tried to wake him up, and made a simple bandage on his wounds, Tan Bingyun quickly woke up, but the other Tanks of the American Army were still advancing.
At this time, Tan Bingyun only had the last grenade left in his hand, he could not care about the pain on his body, and threw out the third grenade when he found the target, but this time, like the first grenade, he still did not throw the target.
In a hurry, he gestured to Mao He at the first time, he himself went to attract the other side's firepower, let Mao He find an opportunity to blow up the tank, and finally under his cover, Mao He also threw the target and successfully blew up the second tank.
The tank troops in the rear saw that the two tanks in front had been destroyed, thinking that we had ambushed explosives and heavy troops on the road, and they had to retreat first and be on standby.
Since the tank troops no longer dare to rush forward, then we only need to continue to blockade with firepower in the future, so we will definitely buy more time for the large troops to retreat.
That night, the American tank unit did not attack again, but early the next morning bombers were sent to bomb the 390 heights, and after the bombing, vehicles were sent to explore the way.
At this time, Tan Bingyun was ambushed in the 390 highland and aimed at the liaison officer in the car for point shooting.
In the tank that followed, Tan Bingyun found a shooting dead end, blew up the chassis of the tank, and caused the tank to produce a series of explosions.
Such a situation really made the US troops start to panic, they all thought that we had a heavy ambush, and could only retreat, tan Bingyun also took the opportunity to escape back to the safe high ground.
The class teacher returned to the court, and the chairman received him
Because Tan Bingyun constantly changed positions to snipe at the enemy army, and the strafing of the enemy tanks did not cause him any damage, the enemy army could not figure out how many people we still had in ambush.
They did not dare to rush to attack, nor could they retreat too far, and finally they did not expect that the two sides actually pulled for 8 hours, which was really too precious for us, enough for our large troops to retreat.
No one expected Tan Bingyun to block the US military for 8 hours alone and complete an impossible task, but it was really happening on the battlefield!
But in his eyes, this matter has only completed the task explained above, and he does not know how much shock he has brought us.
The enemy's tank unit also did not expect that there was no explosive ambush on their opposite side, there was no heavy interception, only Tan Bingyun, and it was this person who hindered them for 8 hours.
When Tan Bingyun withdrew the large units of the Twenty-seventh Army, the commander knew that he had made a miraculous achievement, praised his wit and bravery, and even took a photo with him and published it in major media newspapers.
After the end of the War to Resist US Aggression and Aid Korea, our volunteer troops also withdrew to China one after another.
After returning to China, Tan Bingyun became a prominent figure, his deeds have long been transmitted back to China, and Chairman Mao led other central leaders to see the real face.
After returning to China, Tan Bingyun was not only praised and praised by Chairman Mao and other leaders, but even received repeated toasts from the five marshals at the celebration party of the War to Resist US Aggression and Aid Korea.
Later, on National Day, Tan Bingyun was also invited to Tiananmen Square to watch the military parade, and before that, he was awarded the title of first-class hero.
Tiananmen Square ceremony
Because of his outstanding performance in the Korean War, the North Korean leader also paid attention to him, and the North Korean leader also contacted Peng Dehuai to award Tan Byung-yun a first-class soldier's medal of honor.
Later, he was invited to North Korea and was warmly welcomed by the Korean people.
Logically, with his superiority, he could continue to stay in the army for further study, and it would be possible to become an officer at the level of regimental commander in time.
But surprisingly, he gave up this opportunity, and when the country was not at peace, he was bent on making a contribution.
Tan Bingyun and his family
Now that he has settled down, Tan Bingyun hopes to go back to live an ordinary life, and he can also develop the construction of his hometown and continue to play his role in another way.
After returning to his hometown, Tan Bingyun also served as deputy chief, section chief, and deputy director of the Public Security Bureau in Jiangjin County, and later retired in 1983.
In 1991, the elderly Tam bybyo Byung-un was again invited by the North Korean leader to visit north Korea again, and the 12 volunteers who accompanied him enjoyed the highest etiquette in North Korea.
To this day, North Korea's museums still hold photographs of these people's heroes, and their textbooks for primary and secondary school students also contain legendary deeds about these Chinese volunteers.
Tan Bingyun
Not only have we not forgotten these combat heroes, but North Korea has not forgotten them, and their stories will always live in our hearts.
Tan Bingyun's life is the creator of miracles, on the battlefield can forget life and death, bravely kill the enemy, survive from the tip of the enemy's sword again and again, and also cause a certain deterrent to the enemy.
The merits of his life are deeply rooted in the history of the whole country, and we will not forget, not to mention that he himself has never put up a shelf, nor has he taken the slightest pride, and he is willing to go back to build his hometown after he has achieved fame.
This is the hero of our older generation, each of whom was the founder of this era, the creator of miracles, and what we now see as impossible to accomplish, they all carried hard in that era.
Therefore, whether it is the past, the present, or the future, as long as we can unite as one, we will also create miracles that belong to this new era and make the impossible possible.