If Yun Chang Is Immortal, the Han Dynasty Will Rise Again

I traveled through time and became a disciple of Hua Tuo. After Guan Yu was hit by an arrow, I used medical skills beyond my time to save him. Jingzhou was preserved and the national power of Shu Han was not damaged. However, Guan Yu's survival also changed the relationship between the characters and the historical direction, and new challenges and internal conflicts quietly emerged.