A historical essay written by a master of engineering, the author has personally tested the poison, and the grain and grass are a piece.

The first industrial revolution was carried out in Daming and changed that era.

The author's science and technology innovation board let me take a ride, come and help me stand on the platform!

The silver alliance of the people, the envy of the face floated!

"Daliang Doctor" pushes the book "The Industrial Revolution of the Ming Dynasty" is in the middle of the hand, please wait a moment,

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