There is no shortage of favored men in the world of immortality. Jiang Lihe, a favored son of heaven, met Shi Huaiyin, also a favored son of the demon clan, in Heihuailin. The two collided and sparked.
The consequence was that Shi Huaiyin was stabbed to death with a sword.
Revenge?
No no no.
He wanted to repay the favor.
Jiang Lihe (suffering) × Shi Huaiyin (attacking)
Intention: move forward.