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The protagonist is a quasi-college student who accidentally gets a time-traveling system. He will become stronger through constant time-traveling to parallel planes. As the rank continues to increase, the strength will continue to increase geometrically. After the third level, you are basically invincible on the earth and can be used as a strategic weapon: external spiritual power, air ladder, 100 meters per second movement speed, 0.1 Second reaction speed, 2 tons of strength in one hand, and 2000 cubic meters of space runes. Basically, you are an entry-level powerhouse. The worlds you experience will include: Parallel War Plane, Zombie Apocalypse Plane, Zerg Invasion Plane, Mechanical War Plane, Space War Plane, and Alien Invasion Plane. In the collision with alien civilization, the protagonist will realize his own shortcomings, become frustrated, and be discouraged. In the end, he will bear hope and strive for a glimmer of hope for mankind in a desperate situation. Level 1: The pinnacle of mortals, the peak physical fitness of humans on earth. Second level: Extraordinary body, endogenous spiritual power, endless circulation, comprehensive improvement of physical fitness, beyond the limits of the human body. Level 3: The natural disaster expert already possesses incredible power. Only nuclear weapons can kill the protagonist. The protagonist can forcefully attack the group's army in a short period of time. Level 4: Flying ability, speed of sound, tough alien forces, changing the direction of the war. Level 5: A star-level warrior who can fly in a vacuum environment, cross the starry sky, reach the sky, achieve cross-planet strikes, and master the power of the void.