The Down-and-Out Ninth Prince: Sign-In for Qin Shubao from the Start

[Alternate History] + [System] + [Conquest] + [Transmigration]

"Prince of Leisure" is not a reward. It's exile. On Li Xuan's first night in the northern frontier, an assassin already has a blade at his throat.

System: Sign-in successful. Obtained Qin Qiong at the height of his power.

Before the blade can fall, this foremost fierce general of the Tang dynasty has already smashed the killer into a bloody pulp.

The border garrison commanders take him for a child and refuse to hand over military authority, secretly sending messages to the Northern Di. Li Xuan can't be bothered to pretend. On the training ground, he uses Qin Qiong's twin maces to cow everyone, then personally executes the rebel general. From then on, the border army belongs to the Li family. When the Northern Di attack the frontier, Li Xuan lets his rested forces meet them. Qin Qiong charges ahead alone, wins against the odds, and secures a great victory for the border city.

When the news of victory reaches Chang'an, the emperor's smile is colder than a blade: the rewards are granted as promised, but the supplies are cut off as promised, too. An imperial inspector and a secret edict demanding an explanation arrive in the northern frontier one after another. Li Xuan is determined to turn the humiliating title of Prince of Leisure into a name that makes the Northern Di tremble.

The imperial decree arrives, summoning him back to the capital for a "chat." Li Xuan grips the decree and laughs. He can go back, but he'll bring his army with him. The sign-in pool still holds legendary generals from the Qin and Han dynasties through the Ming and Qing. He'll have them clear the road to Chang'an.