Borrow a Sword from Heaven

When Chen Qingyu woke up, he had no documents on his body, only a token engraved with the word "night" in his hand, and a stranger in his mind who called himself "Su Yan". The token is hot and points to a blocked city. Su Yan was silent, as if he was hiding some secret that couldn't be revealed. He didn't know yet that in this city, there was a man squatting under the wall, turning over broken bricks, with a half-open knot tied around his waist. He didn't know who she was, what she was looking for, and why he remembered that knot. All he has is a rusty sword, one direction, and a partner who wants to die more than he does. This road is still long.