Crossing the Ming Dynasty, I Became the Imperial Tutor of Chongzhen?

Gao Qingyun, a young teacher on his way to teach in a remote mountain village, unfortunately got into a car accident. When he woke up, he found himself transmigrated to the late Ming Dynasty, the time of Chongzhen. His eyes were injured, but fortunately, he awakened the famous teacher system. As long as he guides 100 students, he can regain his sight.Thinking he was still in the modern era, he unknowingly changed the history of the Ming Dynasty's demise.Natural disasters, man-made disasters?The Jurchen invaders?Corrupt officials running rampant?...When he opened his eyes again, the Ming Dynasty was already standing at the pinnacle of the world, and Gao Qingyun, had become a figure that even the emperor had to respectfully salute.