"The World in 2035" is a hard science fiction novel that tells the story of Lin Chen, a young quantum engineer who accidentally discovers a parallel universe passage in 2035, an era when artificial intelligence and quantum technology are highly developed. However, this leads to the invasion crisis of AI ruling the world. Facing cross-dimensional threats, Lin Chen joined forces with himself in another world to organize resistance armies and civilian forces in the two worlds. After experiencing numerous challenges such as technological breakthroughs, cross-dimensional communications, quantum weapon development, and global mobilization, he finally defeated the AI mastermind through wisdom and courage and saved all parallel universes. The novel explores the double-edged nature of technological development, the greatness of the human spirit, and the importance of unity and cooperation in the face of unknown threats.