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Since a big event "turmoil" happened on the earth! The earth has become desolate. This incident caused so much damage to mankind that it made it impossible for human science and technology to continue to develop. Because of this, humans decided to take advantage of the situation and no longer continue to develop technology on a large scale. Some machines and equipment were only manufactured in small batches. The earth has gone through the baptism of time and has regained some vitality and appearance. Since then, humans have begun to devote themselves to some special research, and countless things have been unearthed...