Elegy for the Remaining Light

When Lu Hongye discovers that to truly save the Ming Dynasty, all the old systems of this dynasty must be broken, and he may even have to break with Chongzhen, what will he choose? As a person who knows the ending of history, should he tell Chongzhen: According to the original history, you will be hanged in Meishan in seventeen years? After all this, can Daming be saved? Is it still worth saving?