Qin Yun finally understood, it seemed that he still underestimated the help provided to him by the system.

The steam engine, which has been self-repaired and optimized, is likely to be considered a steam engine that has been improved for several generations.

The performance is at least doubled, and the energy utilization is quite high.

The two chatted and chatted, and the time was finally approaching ten o'clock in the morning, and the release was now......

Chapter 102 of "The Follower Eunuch Dressed as a Princess at the Beginning" is the emperor in the town is hitting with his hand, please wait a moment,

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