Liezi Tang Wen has a chapter about "Three Ancient Swords". Later, Taoism borrowed and developed the word "Daojian" from Liezi Taoism, and applied it to the fields of Taoism and the theory of mind and nature, giving Daojian the connotation of religion and belief. Taoism's borrowing and exertion of the word "Tao Jian" shows the influence of Liezi on Taoism and the kinship between Taoism and Taoism from a specific level. The word "sword" in Liezi can almost be replaced by the word "Tao". For example, in Liezi Tang Wen, Kong Zhou said, "I have three swords, and only my son chooses them. I can't kill anyone, I must tell them first. " When it is said that it contains light, it is invisible and unknown. What it touches is boundless, and it is imperceptible through things. Second, Cheng Ying, when you are in the dark, you will look at it in the north. If there is something, you won't know its shape. What it touches is also audible, and it is not sick when it passes by. Three days, practice at night, you can see the light immediately during the day, but you can't see the shape at night. It touches things, but it goes too far, and it goes with it, feeling sick but not bleeding. The three treasures passed to the thirteenth generation, to no avail. I hid it in a box and never opened it. "From these ancient buildings, people can smell the Tao Te Ching written by Laozi, the founder of Taoism, and hear the mulberry joy of Zhuangzi, the Taoist master after Liezi. Later, Neidan Health Keepers did bring Liezi Sword into Danxue. Volume 299 of the Collection of Ancient and Modern Books and Natural History records "static skills in the night training box".

Although the sword in Laozi must be attributed to the "ominous device", the magnificent philosophical realm in Liezi and the incisive insights in Zhuangzi moved later Taoism, and the Neidan family in Sui and Tang Dynasties began to discuss swords frequently.

According to the Biography of Chen Tuan in the Song Dynasty, Yan Lu, a Taoist priest in the Tang Dynasty, was a "Kansai hermit with swordsmanship, and was over 100 years old. Walking lightly, hundreds of miles in a blink of an eye, several times faster ",is a well-preserved and legendary Taoist." "Before he heard this story, he lived in the dust and met Zhong Liquan in Chang 'an Restaurant." A dream is a dream ",so he realized that in order to cross, he had to be taught by Dajin Dan and Lingbao. Then he met a real dragon in Zhong Nanshan and preached the worship method between the sun and the moon and the way to escape the sword. He claimed that "I have three swords to tell the world, one to break my love, the other to break my troubles and the other to break my stupidity".

How to practice the realm of Liezi's three swords? In the Nine Immortals Classic of Dragon and Tiger, the Tang Priest Fa Shan gave a specific method: "Those who practice swords will collect essence first and then get angry. The lungs are wind, the liver is carbon, the spleen is yellow mud, and the kidney is the essence of the sun and the moon. " Kidney is water, spleen is mud, as a furnace, one breath is the law, and the other breath is the sword. "In the Sui and Tang Dynasties, Liezi's sword has become synonymous with monasticism. What is Tao? The pre-Qin Zhuangzi Xing Shan said: "Tao is also reasonable. ..... no matter what you say. Guan Shang said: "Don't pay attention to rationality, but be rational without losing the Tao." If the Tao of man is empty, it will pass, and if it dies, it will be blocked. If he is not, he will be unreasonable. Xie Lao, written by Han Feizi, is based on the principle of "truth" and holds that "all things have different reasons, and Taoism stops all things", so it is said that those who are reasonable are also ". It can be seen that pre-Qin thinkers have been using "reason" to explain "Tao", and those who have gained the Tao are real wise men who understand the reason and walk in the Tao. In pre-Qin Taoism, Tao guided the existence of all things.

Liezi's sword is truth, so winning the sword is the way. Influenced by Liezi, the cultivation thought of this kind of thought in Book 12 of the Ten Books of the True Sword is clear at a glance, so it is better to reveal the whole poem for interested readers to play with.

"Two wisdom swords were buried in real soil, and when they came out of the box, they roared and shook the wind and rain.

Without this instrument, scholars will make thousands of mistakes.

Only when you are careful with your sword can you use the elite to cross the times.

When flying, people know but don't ask; Clearly found the yin and yang road.

When I caught the Jade Rabbit, I was afraid to leave, so I was killed by vermilion in the furnace.

Judge young and old, distinguish between ups and downs, advance and retreat, and divide the guest and the host.

The flickering flames are burning in the sky, and the exercise is very subtle and difficult to see.

Although bluffing sounds sad, it always depends on attachment to loving mothers.

If you want to surrender the dragon, go to the north to find the water tiger.

Seeing the dragon and tiger, they circled each other and floated into a ball.

The crane moved to the top of Kunlun Mountain, locked in an earthen kettle, and could not be pulled off.

Interest rates are continuous and uninterrupted, and need to be precise and professional.

The dew falls from the sky and is rich and sweet.

When the bait is refined, it will be returned to Dan this day.

In the past, the symptoms were common, refreshed and the limbs were smooth and healthy.

Real fire never comes from wood, not even a Mo Qiang drill.

Jade furnace needs news when it is hot, but fire is afraid of cold and water is dry.

If you get a real sword from your first teacher, it is not difficult to practice.

Broken snow hangs on the cliff, and the jade box hides the old dragon pan.

Huachi, a god of water and jade, knows when to raise his hand and wave it.

In case of revenge, you must report it urgently, for heresy and evil spirits are terrified.

Break the HarmonyOS system, chisel chaos, make it come and go flawless.

You don't have to be busy concentrating, you can spend the money you should spend.

This song is for those who meet the sword, and can be deliberately speculated.

"The True Story at that Time" Zhang Chonglie's note: "Wise people have different opinions, and wise people have different opinions." The poem "True Land Map" in the Summary of Danxue in the Ming Dynasty quoted the first sentence of "Song of the True Sword", saying that "two schools of wisdom and swords bury the true soil and all diseases disappear." He also explained: "Peace of mind is true, sincerity is silent softness; If you are arrogant, don't forget to help. "

The Song of Wisdom Sword, Volume 4 of Zhongheji, said: "The sword tactic has made people sincere and resolute since it was handed down from generation to generation. Someone asked me why I was looking for it, but the way was not ordinary iron. This piece of iron came out of Fang Kun and came into my hands, which is very remarkable. Add oil to the fire and make it into steel. Everyone who studies Taoism knows this tactic, that is, the yang god is fierce and the yin demon is destroyed. Magic power is hard to measure. Let's reveal it to you today. ..... This invisible sword is famous for its magical power. Learning to cultivate truth depends on this sword, and it is difficult to achieve without this sword. "

There are five poems "Hui Jian" in Xu Xuanzi's Collection of Ming Zhen, and the fifth poem "Hui Jian" says: "I have had a sword for many years, so naturally I have to cross the mountain. Ruiqi was cast into a strange group, and all evil will move when polished. The blazing flame shone brightly at the stars. Hanging on the edge of Bi Xiaoxian's uterus, there is no need to lift the gods. "

Zhang Sanfeng's poem "Rootless Tree": "Cut the dragon sword, bind the tiger, and run the plow." Please pay attention to Liu: "If you can't stand false feelings, then true feelings will come true." . The real life is to manage Kui Gang, mediate struggles for a living, turn punishment into virtue, and exercise a furnace of true sun and moon. "

Volume 299 of Ancient and Modern Book Integration and Natural History Wonders records the article "Quiet Night Training Box", which is one of the best works. Since the pre-Qin and Han dynasties, Taoism has explained Taoism with qi, and Liezi's Dao sword is naturally an innate Qi sword. Dong Qing Dening said; "Dan sword cover gold, gold is gas. The sword is not gold, Dan is not angry. " The first volume of Huang Yuanji's Quotations from Reading Yutang in the late Qing Dynasty said: "A Taoist should first refine his sword, and the sword is also innate."

From Taoism's discussion of swords, people can see that Taoists have built a "natural science" building with the exquisite and superb philosophical connotation of Liezi's three swords, which is exactly what Liezi and Taoism are superior to.