The protagonist, Chen Yuetian, once transmigrated to the past, into a world of cultivation, and became the renowned God of War, Hou Yi.
He tragically fell in battle. Later, he awoke from a dream, believing it had all been nothing but a dream.
Although he had spent a long time in the cultivation world, when he woke up, he found that only one night had passed in his original world. Everything that had happened was just a dream.
But when he saw people in this world casting those very spells, he realized that immortals really did exist.
When he began cultivating according to the techniques from his dream, he discovered that they actually worked.
Only then did he realize that he really had transmigrated to the past and had truly become the renowned God of War, Hou Yi.
I was once the God of War, Hou Yi. I am beyond your reach.
This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.
If I remember correctly, Hou Yi was a monarch of Daxia, and it was Dayi who killed him.