The mortal world is not an obstacle to the immortal road, but the root of it; the sword is not a weapon for killing, but a support for protection. The young man pulled out the first sword from the mud of Qingyun Town, not to ascend to the sky and live as long as the sky, but to protect his sister who was coughing up blood on the kang, the old servant who had guarded the Lin family for three hundred years, the girl who came to him across nine reincarnations, and finally to protect this mortal world full of fireworks.