Split the Clouds and Open the Sky

Fifty years ago, an unprecedented giant asteroid hit the earth. This appalling natural disaster instantly kicked up countless dust particles and poured them into the atmosphere, blocking out the sky and the sun. Earthquakes, tsunamis, volcanic eruptions, and a series of natural disasters have erupted. The atmosphere is not only filled with dust raised by impacts, but also volcanic ash and large amounts of sulfuric acid released by volcanic eruptions. They quietly penetrate into the stratosphere in the form of aerosols, building an eerie barrier—what humans call "ash clouds." The "special cumulus clouds" covering the world show no signs of weakening or disappearing after fifty years of development. Global temperatures are dropping rapidly, and extremely cold weather has greatly destroyed the integrity of human civilization. In a human stronghold called Kunbao, the key technology to save mankind has been found. Where will a desperate survival related to the future of mankind go?