Before Xiao Yuhan went to war, Shen Qingning cut off a strand of his own hair and sewed it into Xiao Yuhan's armor. The old grandma said that this would tie their lives together. Xiao Yuhan died in the battle, but Shen Qingning found that he could not grow old or die. Shen Qingning lived guarding the bloody armor for a thousand years, watching helplessly as Xiao Yuhan reincarnated into Xie Linyuan, Lu Zijin, and Gu Nancheng, reunited with Shen Qingning again and again, and was pushed away by Shen Qingning's own hands again and again. It wasn't until Gu Nancheng found the armor and dug out the still-black hair that Shen Qingning understood Xiao Yuhan's soul and never stopped looking for Shen Qingning.
