It's a story with two male protagonists, not a novel, not a romance, and the label is different from the one I chose.
Under the snow cliff, the demonic energy corroded the bones, and Yun Zhao finally realized that his master's century-old warmth was all staring at another soul through him. The spiritual roots are shattered, the Taoist heart turns to ashes, the past is crushed, and the demon lord is allowed to reshape the remaining body.
But he didn't know that above the sky, the man sealed the mountain and abandoned the road for him——
He was never a substitute, but the first love that was recovered and pushed into the abyss by his own hands.
I'm going to say that the teacher is awesome