The world we live in is called "mortal". According to legend, in the Xia Dynasty, a large number of cultivators began to appear in the mortal world, and the strongest cultivator among them would be recognized by the mortal world, so that they would be instilled with the "vitality" of heaven and earth, and the cultivators with "vitality" would become the contemporary Xia king, ruling over the water and soil until their own five elements of yin and yang and "vitality" were one, so as to obtain the opportunity to step into immortals. Once an immortal is attained, the practitioner will be rejected by the mortal world and transported to another world, which is called the "Metaverse" by the world

In mortal worlds, human beings are born with seven chakras, namely the crown chakra, the eyebrow chakra, the throat chakra, the heart chakra, the sun chakra, the abdominal chakra, and the submarine chakra. At birth, any person will be endowed with an attribute of the five elements of yin and yang, which constitutes the "undersea chakra". The Submarine Chakra, also known as the "Mooladhara", is in charge of the life force, and the strength of its vitality determines whether a person has the possibility of stepping into spiritual practice. The cultivation realm is divided into nine realms: condensing roots, building foundations, heartbeats, golden pills, yuan infants, transforming gods, crossing tribulations, three-step void immortals, and immortals. Therefore, in order to make their children qualified to practice, people will search for spiritual objects that contain the power of the five elements of yin and yang when their children are not yet born, hoping to bless their children to successfully embark on the path of cultivation.

On the road of cultivation, there is a snake behind the tiger on the left and a leopard on the right, and the only way is to move forward. Cultivators cultivate the power of the five elements of yin and yang, focusing on themselves, and can be out of the control of the mortal world, but their cultivation is very slow. Focusing on external objects, it can quickly seize the yin and yang of the five elements in the world, speeding up the speed of cultivation and deepening the imprint of the mortal world in the body. The imprint of the mortal world restricts many of the practitioners' actions, and also increases the danger of crossing the triple eon, and the only way to remove the imprint is to cross the tribulation. Even so, the vast majority of cultivators still choose to practice with the help of external forces, because they believe that they will definitely become immortals.

If you want to become an immortal, the most important thing is vitality. If you want to gain vitality, or become the strongest person of this generation to be recognized by the mortal world, or travel the world in search of ancient ruins, if you want to become an immortal, the most dangerous thing is to step into the triple tribulation of immortals. One is the forging body heavenly thunder tribulation, the second is the past heart demon tribulation, and the third is the red dust tribulation. The Heavenly Thunder Tribulation is the first test for cultivators in the Metaverse, and it is intended to forge the body. The Metaverse is full of high-density Yuan Qi, and only after the 3,000 Heavenly Thunder Forging can a cultivator get rid of most of the impurities and imprints in the mortal world, so as to improve the strength and density of the body, and meet the minimum requirements for survival in the Metaverse. No matter whether a practitioner is extremely good or extremely evil, no matter how many good deeds a practitioner has done in the process of cultivating to save the common people or evil deeds that have caused trouble in the world, as long as he can keep his heart undisturbed, he will be able to overcome the inner demon tribulation and thus move forward. The Metaverse enables practitioners to enter a reincarnation illusion of constant rebirth through vitality. Practitioners need to go through countless lives, experience countless joys and sorrows, and feel the vicissitudes of the world. Only by seeing through the seven emotions and six desires and reaching the realm of despair or infatuation can you safely survive the Red Dust Tribulation and become a real immortal. Therefore, the Red Dust Tribulation is also called the "Life and Death Tribulation".

After the Xia Dynasty, the vitality of the world gradually thinned, and the immortals gradually became a realm beyond the reach of cultivators. Some people say that the "Metaverse" of the immortal world has undergone a mutation, and the vitality has disappeared sharply, which is no longer enough to connect with the "mortal world"; some people say that the "Metaverse" has been invaded by foreign forces, and in order to protect the "mortal world", they must not keep connecting with each other. Whatever the reason, the "Metaverse" just disappeared. At the same time, there are also immortals, as well as cultivators who are in the realm of tribulation and three-step void immortals who continue to age over time.

During the Spring and Autumn Period, the immortal and "Metaverse" had become a legend, and the period of transformation of the gods had become the ultimate realm of cultivation. Become a cultivator in the incarnation period, or guard the country or travel the world, and retreat to the mountains and forests. At this time, the Great Zhou Dynasty was declining day by day, the royal family was declining, and there were fewer and fewer practitioners in the royal family, while the vassal states still nominally respected the Zhou Tianzi, but in fact they were crusading against each other and expanding their own power. Since cultivators were not allowed to participate in national wars and disputes, many small countries could not find help and became the target of crusades against major countries.

At the end of the Spring and Autumn Period, the state of Chu was helped by Luban of Gongsun to make a large number of ladders and weapons to defeat the Song Dynasty. On this occasion, Mozi of hundreds of schools of thought came to lobby. Mozi and Luban had different ideas, so they launched a fierce offensive and defensive battle, and in the end Mozi won, so Chu canceled the plan to attack the Song Dynasty. After this incident, Lu Ban deeply admired Mozi and no longer participated in the national struggle. By chance, Luban got a piece of ebony, which was very suitable for making toys. So under Luban's whimsical thinking and exquisite technology, Luban lock was born. The Luban lock is composed of six heads, and at the moment when Luban put the Luban lock together, it suddenly rained in the clear sky, the wind and sand and dust hit, and there was even lightning nearby. Lu Ban didn't have time to pack up his things, so he took shelter from the rain first.

In just half an hour, the sky cleared. When Lu Ban came out, he found that the lock had separated himself. It had to be reassembled, but no matter what means he used, the parts of the lock repelled each other like magnets. Lu Ban, who did not believe in evil, remade the same lock with the remaining ebony, and there was no such strange situation. Lu Ban had no choice but to give up. In this way, this repulsive lock was regarded as a strange thing by everyone and passed on to an old man.

The old man didn't know where he came from, but after hearing about the strange thing, he came to visit Luban. Seeing that the old man's eyes were as sharp as a sword and his body was as light as a swallow, Lu Ban knew that this was a hidden cultivator, so he handed over the Lu Ban lock to the old man. Just as the old man picked up the toy, the sky and the earth changed again, the sky suddenly turned black, the wind and sand rose again, and the lightning flashed and thundered. The old man screamed, his body gradually floated into the air, his arms extended, and his whole body exuded a milky white halo. On top of the old man's head, a piece of wood from Luban's lock was emitting a strong light, slowly blending into the old man's body. "Yuan, Yuanqi, Yuanqi, this is the Yuanqi, this is the Yuanqi that has disappeared in this world for thousands of years!" the old man shouted excitedly. "It turns out that the legend is true! Really! Hahahaha, it turns out that there is really vitality. ”

Looking at the old man who was a little stunned, Lu Ban didn't know what to do. He didn't practice and didn't know the vitality, but he knew that the Luban lock he made must have a big secret.