Prior to his execution, Song general Yue Fei detailed his military tactics and experience against the Jin forces in writing during captivity, titled Vital Information Against the Jins (), in hopes that future generations will continue his mission to restore China with his text.
Before his death sentence, General Yue Fei wrote down his military tactics and experiences fighting the Jin forces in a document called "Vital Information Against the Jins" while imprisoned. He hoped this work would inspire future leaders to carry on his fight for China's restoration.