Resurrection of spiritual energy: A hundred years ago, the world underwent a sudden change, spiritual energy poured in, and the world entered a prosperous age of martial arts.
· Prosperity of martial arts: Everyone practices martial arts, and their realms range from warriors to martial emperors, and strong men can move mountains and fill seas.
· Fatal price: Martial arts practice will produce "martial arts waste gas" - a kind of polluting energy condensed from impurities in the true energy, the aftermath of battles, inner demons of cultivation, etc. The exhaust gas is colorless and odorless, but long-term inhalation will corrode the meridians, pollute the sea of consciousness, and eventually make people go crazy or die.
· Exhaust gas disaster: The exhaust gas from martial arts around the world has accumulated into mountains, forming "waste smog" and shrouding major cities. Areas with high exhaust gas concentrations are called "wastelands" and no one dares to live there anymore.
· Exhaust Gas Management Bureau: Governments of various countries have established specialized agencies to use giant "exhaust gas purification towers" to absorb exhaust gas, but they only treat the symptoms but not the root cause. Exhaust gas is still increasing, and "exhaust gas mutants" are born - monsters condensed by exhaust gas, ravaging the city. Martial arts waste gas is not just garbage, but an inevitable product of the development of martial arts civilization - every breakthrough, every battle, and every practice is creating waste gas.
· The waste gas contains wasted martial arts essence - if it can be purified and recycled, it can gain amazing power.
· In order to save himself, Tiandao created the "devouring system" and selected a "scavenger" who could withstand the backlash of exhaust gas.
