The Great Idle Person of the Zhenguan Era.

Summary

Li Su signs a written agreement with his master before revealing the secrets of movable-type printing. The master is amazed and excited, but Li Su reminds him of the contract's confidentiality clause. Later, Li Su inspects the finished product and is impressed with the master's work. A polite person approaches Li Su and tries to persuade him to cooperate with their shop to make a profit from the printing technique. Li Su is initially hesitant but agrees to a deal after the shopkeeper promises to keep the technique secret and offers a favorable profit-sharing ratio. Meanwhile, a legend spreads through Chang'an City about a mysterious stationery store that can print books quickly and efficiently. Scholars flock to the store, eager to get their books printed, and the store becomes a treasure trove of knowledge.

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