After Technology Disappears

A strange white light swept across the world, and all modern human technology was rendered useless. The power is cut off, the machinery is shut down, and gunpowder is dead. Human beings clearly know all the physical formulas, industrial drawings, and mechanical principles by heart, but no matter how hard they try, they can no longer create any technological creations. High-rise buildings are only empty shells, cars are reduced to scrap metal, guns are completely misfired, and industrial civilization that has lasted for hundreds of years has come to an end in an instant. Order collapsed, supplies were scarce, panic spread, and some madmen looted with brute strength. Jianghu martial arts reappear in the world. Some people use force to rob and violate the ban and cause chaos, while some people use their fists to guard their hearts and act chivalrously to calm the people.