Fire Phoenix: I Promise You a Lifetime

I personally like Hades from Fire Phoenix, and there are too few fanfics about him, so if you don't like it, don't read. I'll change the original ending because I don't like it, and I'll break up Shen Lanni and Lin Guoliang's pairing. I'm not sure about the rest. Here's the story introduction:

Twenty-first-century girl Xu Yijian was coming home from work late at night when she accidentally stepped on a manhole cover and transmigrated. She decided to join the army and secure a stable position. But after undergoing a major transformation, she was assigned by her superiors to restorative training at the Fire Phoenix training camp. A shattered soul would find new hope in a crucible like this. He discovered her on the brink of death during a border mission, then encountered her again at the training camp. He understood her deadened heart and was willing to help her start over. More than that, he wanted to journey with her through the turning seasons.