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Due to the continuous improvement of human genes, human achievements in all aspects have increased significantly... Similarly, the entire world is changing, humans are beginning to experience life and death crises, and many creatures are experiencing atavism. It turns out that the creatures in the "Book of Mountains and Seas" written by our ancestors still exist... It was at this time that scientists discovered the gene liberation technology, allowing humans to fight head-on against the creatures of the Mountains and Seas...