Errors

1:

Johannes Gutenberg was the first European invented movable type printing, and mass production of this technology, but it does not mean that he invented first, movable type printing was the earliest invention in the East.https://en.wikipedia.org/wiki/Johannes_Gutenberg

2:

During the Eastern Han Dynasty (25-220 AD), an official named Cai Lun improved the technique after years of experimentation. He used many plant fibers such as bark, rags, torn fishing nets as raw materials, steamed and cooked them with water, then pounded them into pulp, and then spread the pulp evenly on a fine screen and dried it into a kind of thin paper. The paper was suitable for writing and also very cheap so it became very popular. I think what China invented was not paper, but papermaking, and Egypt used the thinnest plant fiber sheet to woven it, called paper.

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