Yun Xiyue, a girl from Qingyun Mountain, is innocent and yearns for the rivers and lakes below the mountain; Xie Linyuan, a young man in black whom she meets in the back mountain, has a blood feud and is as cold as ice. A piece of wound medicine, a wooden hairpin, and a green sword tassel made two people who should not have met, quietly moved between the light of the sword and the shadow of the sword.
But when they finally got close to each other, they discovered that there was a blood feud between the two families. Yun Xiyue's master was one of the accomplices who killed Xie Linyuan's family. On the one hand, it is the kindness of upbringing, and on the other hand, it is unforgettable; on the other hand, the blood feud has not been avenged, and on the other hand, the deep love is unbearable.
In that battle, he used martial arts to kill his enemy and "died" in her arms. Three years later, she received a letter from him: He was still alive, but became a teacher in a small town in Jiangnan who could no longer wield a knife.
They spent their whole lives pursuing an agreement that could not be fulfilled. But the sword spike swaying in the wind and those words spoken under the moonlight have never been lived up to.
This is a story about regret. But it tells us: true love will never be defeated by regret.
