At the End of the Sui Dynasty: Signed as a Divine General, I Am No Longer Worthy of This Position in the Tang Dynasty

The system flows at the start of the game, and then where does the system go?

Hidden dragons leap across the abyss, and tigers crouch in the mountains with their teeth spread. Save the country from danger and show off our great ambitions.

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It's very well written, clearly organized, and the story has a tight structure. The characters are all flesh and blood, and they are not mindless system summons. They are very worth reading in the Suitang series of novels.