Under Zhang Sanfeng's understanding, the "Shuangyuan Sword" is divided into two diametrically opposed swordsmanship. "Yuan Gongjian" is like a man, although simple and generous, but full of atmosphere, giving people a domineering spirit. "Yue Nu Jian" is like an adult woman, sometimes gentle and generous, sometimes tricky and eccentric, sometimes ruthless, sometimes dexterous and clever. According to Taoism, men are yang, women are yin, and the complementarity of yin and yang is the highest state. Therefore, the swordsmanship that Zhang Sanfeng comprehended was initially divided into two sets of swordsmanship that were diametrically opposed, and later merged into a complementary swordsmanship. Zhang Sanfeng named this set of swordsmanship "Liangyi Swordsmanship", which is too ugly to call the male sword and the female swordsman, so the two sets of basic swordsmanship are named Shaoyin Swordsmanship and Shaoyang Swordsmanship. The male sword is also the yang sword, which lacks femininity and softness, so it is called the Shaoyin swordsmanship; The female sword is also the yin sword, because it lacks masculinity, so it is called the Shaoyang swordsmanship.

Cultivators can first learn the Shaoyin Sword Technique or the Shaoyang Sword Technique according to their own characteristics, and after they have achieved something, they will practice other sword techniques, and when they have achieved both kinds of sword techniques, they will learn how to integrate them. Those who have learned this set of swordsmanship are equivalent to mastering the principle of yin and yang operation, and they are the world's first-class masters. The power of this set of swordsmanship is not very great, and the power is not very amazing before it is integrated, but once it is completed, the power is very amazing.

After Zhang Sanfeng returned to Wudang, he taught his disciples this set of swordsmanship. Soon after, he discovered that not all of them were suitable for this set of swordsmanship, and more people not only failed to practice it, but also affected their cultivation. Zhang Sanfeng finally discovered the shortcomings of this set of swordsmanship, and the person who cultivated this set of swordsmanship must be a person who has no foundation in martial arts. Only this kind of person has the possibility of achieving something, and can he truly practice the highest level of this set of swordsmanship. Zhang Sanfeng secretly adopted a group of orphans and secretly trained them to learn this set of swordsmanship.

A few years later, Zhang Sanfeng was over 130 years old, and he was already the oldest old man at that time. But ordinary people don't know that Zhang Sanfeng has not only trained a group of swordsmanship masters, but also reached the realm of natural perfection. Zhang Sanfeng comprehended a higher martial arts from the "Shuangyuan Sword" and Taoism, and created a more advanced "Taiji Sword Technique" than the "Liangyi Sword Technique". If it is said that the "Wudang Liangyi Sword Technique" is a clear yin and yang sword technique, the "Taiji Sword" can no longer distinguish between yin and yang, there is yang in yin, yang with yin, yin is not yin, yang is not yang. The biggest difference between the two sets of swordsmanship is that the "Liangyi Swordsmanship" goes straight to the point, and at most it is two sword qi of yin and yang. The "Tai Chi Sword" is a large round ball that surrounds the opponent and oneself, and in this round ball, the person who uses the "Tai Chi Sword" is free to play. There is a taste of "my territory, my decision".

By chance, two half-grown children who had learned the basic skills of the "Liangyi Sword Technique" actually joined forces to defeat one of Zhang Sanfeng's disciples. After Zhang Sanfeng found out, he asked the three of them to compete again in front of him. At the moment of the competition in front of Zhang Sanfeng, Zhang Sanfeng discovered a secret that he had not discovered before. It turns out that as long as two people who have learned the Shaoyin Sword Technique and the Shaoyang Sword Technique, if they cooperate with each other, it is possible to exert unexpected power. Although the children learned the Shaoyin Sword Technique and the Shaoyang Sword Technique, they usually ate and lived together and had a lot of tacit understanding. As long as two people who understand each other and can comprehend each other's thoughts join forces, the two of them can play the role of two swords. The two sets of swordsmanship not only complement each other but also increase their power, and a new type of swordsmanship combination was discovered by Zhang Sanfeng.

Zhang Sanfeng experimented several times and found that only with the combination of Shaoyin Sword Technique and Shaoyang Sword Technique, the power would be the greatest. Two people can use the Shao Yin Sword Technique and the Shao Yang Sword Technique respectively, or four or more people can use the Shao Yang Sword Technique and the Shao Yin Sword Technique. A pair of people use the Shaoyin Sword Technique and the Shaoyang Sword Technique, and they only need to cooperate with each other. If several pairs of people are used together, they will need to cooperate with other formations. To put it bluntly, two people divide the Shaoyang Sword Technique and the Shaoyin Sword Technique, just like a person using his left and right hands, and treat the two people as one person. When several pairs of people are used together, every group of two people is regarded as one person, forming a "Liangyi Sword Array" or "Sancai Sword Array", and even "Four Elephant Array", "Five Elements Array", "Liuhe Array", "Seven Star Array", "Bagua Array", "Nine Palace Array" and so on.

According to Zhang Sanfeng's estimate, two people divided into Shaoyin Sword Technique and Shaoyang Sword Technique, and the power was equal to eight to ten times that of a single person. If a group of people use the sword formation together, the more people there are, the more powerful it will be. Even if it's not a one-on-one match, using other swordsmanship is just as powerful as it is a little bit stronger. Since then, the Wudang faction has their own treasures of Zhenshan, "Liangyi Sword Technique" and "Taiji Sword", not counting, and there is a sword array that outsiders can hardly break at all. This established the status of Zhang Sanfeng and the Wudang faction in the rivers and lakes, and also created batches of swordsmanship masters.

It is said that a hundred years ago, a descendant of Mingjiao fled into the Wudang faction because he was hunted down by the imperial court. Mingjiao was originally the most powerful anti-Yuan group among the people, but it later split up. It is said that Zhu Yuanzhang, the founding emperor of the Ming Dynasty, and many other people will be believers in Mingjiao. Later, after Zhu Yuanzhang got the world, not only did he not take care of the people in Mingjiao, but instead slaughtered a large number of people in Mingjiao. Many Mingjiao people were killed by Zhu Yuanzhang, and more people left the Central Plains, some went to the Western Regions, and some went to the South Seas. The family of the descendants of the Ming Sect who fled to Wudang were all killed by Zhu Yuanzhang's people.

Originally, he was going to spend his whole life on Wudang Mountain, but he didn't expect him to learn the "Liangyi Sword Technique", one of the treasures of the Wudang faction. Because he was weak since he was a child, he did not learn other kung fu, which made him and the "Liangyi Swordsmanship". He was only thirty years old after learning swordsmanship, and of course he didn't want to live his life like this. After he learned the details of his kung fu, he had an inexplicable impulse, and soon after this person left Wudang. Many years later, a White Lotus Sect appeared among the people, and the remarks of the sect leader in the sect were very similar to the original Mingjiao, and the swordsmanship used was more like the "Wudang Liangyi Sword Technique", and he was the descendant of the Mingjiao who left Wudang. He formed the White Lotus Sect, gathered the surviving descendants of the Ming Sect, and continued to secretly oppose the imperial court. Because his swordsmanship was not only unique but also powerful, many people who came to capture him were killed by him. This set of "White Lotus Sword Technique", which was born from the "Liangyi Sword Technique", has become the treasure of the White Lotus Sect, and only the sect leader or important personnel in the sect can learn and practice.

After many rounds of encirclement and suppression, the White Lotus Sect still exists despite its great vitality. The reason why it can survive, in addition to the fact that some people secretly help each other, is because the "White Lotus Sword Technique" is too powerful. Later, there were internal regulations in the White Lotus Sect that ordinary sect members could learn and practice the basic skills in the "White Lotus Sword Technique", and only senior disciples could learn the "White Lotus Sword Technique", and only the sect leader and the sect leader's successor could learn and practice the entire set of "White Lotus Sword Technique". Whoever learns the "White Lotus Sword Technique" means that he is either the leader of the White Lotus Sect or the successor of the sect leader.

The most famous leader of the White Lotus Sect is Tang Sai'er. Legend has it that she is a descendant of the White Lotus Sect, and her husband is also a follower of the White Lotus Sect. Tang Sai'er, who didn't know martial arts, looked like a fool after learning that her husband was secretly killed by the people of the court on her wedding night. Later, when Tang Sai'er reappeared, she was already a great swordsman with superb skills. According to her own words, she met an immortal in a dream, and the immortal not only accepted her as an apprentice and taught her a set of swordsmanship, but also gave her the position of the head of the White Lotus Sect. Although there were many people who didn't believe this, they couldn't stand Tang Sai'er's superb swordsmanship, and there were still many sect members' support, so Tang Sai'er became the new leader of the White Lotus Sect. After Tang Sai'er became the sect leader, he led everyone to fight with the court and the army many times, although he lost more and won less, but he played the reputation of the White Lotus Sect. In the most spectacular battle, Tang Sai'er alone dealt with eighteen masters sent by the imperial court, and Tang Sai'er not only defeated these people, but also abolished these so-called masters. After this battle, whether it was the White Lotus Sect or the imperial court, they had to admit that Tang Sai'er was the number one master at that time.

It's a pity that among Tang Sai'er's disciples, none of them are outstanding and completely inherit Tang Sai'er's kung fu, and there was civil strife and internal fighting in Tang Sai'er's later years. Tang Sai'er was also angry and anxious because of this, causing his breath to be chaotic and go crazy. After Tang Sai'er became semi-paralyzed, the disciples not only did not take care of her as a master, but also killed each other for the position of the leader of the White Lotus Sect. Tang Sai'er was powerless to discipline them, so he had to watch these disciples ruin Tang Sai'er's hard work step by step. When the White Lotus Sect was once again torn apart, Tang Sai'er finally closed her eyes. Soon after, the imperial court took advantage of this rare opportunity to capture the main altar of the White Lotus Sect in one fell swoop, almost uprooting the White Lotus Sect. Although the White Lotus Sect was not completely wiped out, the White Lotus Sect, which had suffered a great injury, never had the scenery that Tang Sai'er had at that time.