In 2000 AD, also known as the first year of the millennial digital revolution, it reached its peak after 200 years of development, ushered in the fourth revolution of mankind, and also opened Pandora's box with his own hands! In 2200 A.D., mankind officially entered the fourth technological revolution and entered the first year of machinery. It also almost wiped out humanity from this blue planet, and the human race was cornered by the crisis, and the population plummeted from 12 billion at the peak to less than 1 billion in just 50 years. Whole...... The world's last remaining population is huddled in the territory formerly known as China, surviving on the dangers of the Pacific Ocean, the Himalayas and the Qinling Mountains. The crisis erupted 120 years after the first year of the mechanical revolution, a disruptive technological breakthrough that taught humanity a hard lesson for itself. As soon as the 2321 crisis broke out, the United Nations, led by scientists from the P5 countries, jointly launched the Source Project to counter the spread of the crisis. In 2352 A.D., an exciting piece of news spread across the huddled territory of mankind, and scientists around the world poured all their hearts and souls into planning a generation of experiments that were successful. This will mean that humanity will have the ability to change the crisis and return to the good life it used to be.