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One day in the future, when Li Han recalled the afternoon when he refused the class teacher's invitation to make up a class many years ago. You will definitely be glad that it is nonsense for your parents to spend their hard-earned money to buy the right to use the school's medium-sized gas concentrator worth millions, which can achieve 2 times the basic source gas concentration. Qingshan, the city where Li Han is located, has an average source gas concentration of 8. Dachang, the capital of Yuguo, has an average source gas concentration of 50. "This is a world where source energy is distributed according to the city's energy level!" "In normal operation, your end point cannot reach someone else's starting point!" Traveling to the world of "Origin Qi", Li Han became a pink high school senior. [Average concentration of source gas particles within 100 meters around: 10\u002F cubic meters] The moment the weather radar is turned on, the gears of fate begin to turn. "Maybe we're not good at building a new world, but we're pretty good at destroying an old one." ... The background of this book is a bit dark and it does not represent a society with good morals.