I'm Writing a Diary in Zongwu, Please Spare My Life, Lady.

Due to an accident, Lin Fan traveled to the world of Zongwu. Although he liked reading martial arts novels of revenge since he was a child, it would be no fun if he traveled through in his real body, as he might die at any time. Fortunately, the system was always there. He bound himself to the diary system, and he became stronger by writing in a diary. The world of martial arts also became more exciting because of his arrival.