The era of the Great Leap Forward was a special era. The country has been poor for a long time, and all kinds of waste are waiting to be rebuilt, and from top to bottom, they are eager for rapid development, and they are super British in three years and super beautiful in five years. Although the enthusiasm of the whole people is understandable, it does not conform to the law of the development of things, and finally ends in failure. However, in the process, some black technologies have emerged and have been treated as jokes by later generations, but few people can appreciate the wisdom in them. &ldq...

Chapter 487 of "The Almighty Water Friend of the Beauty Anchor" Pan Technology is actually not so difficult is hitting with your hands, please wait a moment,

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