Multiverse doomsday superposition. It is not a single zombie or natural disaster, but "doomsday rules" from different dimensions (such as zombie viruses, digital games, supernatural revivals, and whispers of evil) that randomly erode the real world, leading to partial disorder of physical laws, and ever-changing forms of monsters and disasters.
Shen Chuan. 25 Years old, graduate student in theoretical physics, with strong logical thinking, MAX practical ability, calm personality with a bit of academic ridicule and dry humor.
He firmly believes that "everything can be modeled". His initial combat effectiveness is close to zero, but his analysis and learning abilities are top-notch.
"Hyperdimensional Analysis System" (broken version). Core capabilities do not directly confer power, but provide powerful information collection, model construction and deduction capabilities. However, due to its damage, its function is extremely unstable: sometimes it doesn't work, the rewards are weird (such as the reward "a bag of cement"), and the tasks are weird (such as "the embarrassing moment of collecting ten different monsters")
Relaxed and humorous, with a strong sense of reality. Use a scientific perspective to deconstruct the bizarre doomsday, and use the thinking of a science and engineering man to deal with existential crises. The laughter is naturally integrated into the plot and complaints to avoid brainless jokes.