It Should Be Like Falling Flowers After Leaving Someone Behind

Xiao Qinglan: "Nangong Ke, if you kill my brother, I will never be at odds with you from now on." Nangong Ke: "Whoever kills Lan Xuan will die." Xiao Qinglan: "I will kill her myself." Nangong Ke: "You will die too." A few years later, Xiao Qinglan killed Shen Lanxuan with a sword, and Nangong Ke chopped Xiao Qinglan to death with a flute. The blood stained the country like a painting, and Nangong Ke changed his hair from green silk to white hair. Nangong Ke: "How could I kill you? Didn't I promise that we would stay together forever? You see, my hair is gray, but where are you?"