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Under the endless starry sky, all kinds of powerful monsters are raging. Human technology has been exhausted and can no longer resist the monsters. At this time, a large number of humans suddenly discovered that the killed monsters actually contained a very magical blood - blood essence. After humans absorbed this blood essence, they were able to strengthen themselves and promote the evolution of their bodies. From then on, the human counterattack began! "Absorb one drop of ordinary blood essence, increase your strength by 5 kilograms!" "Absorb 3 drops of alien-level blood essence, increase your strength by 120 kilograms!" "Absorb 2 drops of Mang King-level blood essence, increase your vitality by 0.16, And increase your strength by 160 kilograms!!"