At the End of the Ming Dynasty, I Became Chongzhen's Golden Finger

Good news: I transmigrated to the day before Zhu Youjian ascended the throne at the end of the Ming dynasty, and I even have a golden finger. The future looks bright. Bad news: Something went wrong during transmigration, and to save my own life, I became Chongzhen’s golden finger! Better news: The golden finger is a national fate System that can monitor the Great Ming’s fortunes at any time. Once they reach their peak, I can leave the System and regain my freedom. Worse news: Zhu Youjian is in his rebellious teenage years and doesn’t listen very well. If I can’t get him under control, the Great Ming is doomed. If its fortunes hit zero, it’s all over. This is urgent! “Oh, the System comes with an electroshock feature. Never mind, then.”