Vacuum Continent

In the vacuum continent, this world has never given birth to oxygen. The newly born humans and ferocious beasts all rely on the innate "original air flow of heaven and earth" in their bodies to maintain their lives and drive their actions. This air flow is like its own "life engine", which is both a substitute for breathing and the foundation of strength. However, as millions of years have passed, human blood has gradually become thinner, and the probability of innately awakening the original airflow of heaven and earth has dropped to one in ten thousand. If one cannot generate airflow independently, even breathing is a luxury on this continent, and one can only sit and wait for death. Until thousands of years ago, someone accidentally discovered the airflow gem buried deep underground - this kind of ore contains pure artificial airflow, which can be absorbed by the human body and stored in the Dantian, and transformed into its own usable airflow. It can not only meet the needs of survival, but also serve as a source of energy for practice and battle. Since then, Airflow gems have become the "hard currency" of the Vacuum Continent, and those who control the gemstone veins can dominate the ups and downs; and whether they can absorb and purify the gemstone airflow has also become the key to classifying human beings - those with innate airflow have no obstacles to absorbing the gemstone airflow due to their pure origin, and can even purify the quality; those with acquired airflow need to expend several times the effort, and may also have poor quality gems, resulting in mixed airflow in the Dantian, making it difficult to make progress throughout their lives. Although the ferocious beasts still retain part of their innate air flow, the decay of their bloodline has also reduced their strength. Nowadays, most of them rely on swallowing air flow gems or similar ones to make up for their own lack of air flow, which also makes the battle between humans and beasts on the mainland even more cruel. Many people have vacuum air currents in their Dantian when they are born, which can be divided into two categories: congenital and acquired.