Start from a Branch

On the eve of the college entrance examination, Zhang Ning found himself trapped in an unsolvable nightmare. Every night, he would stand on the dark stage and sing "Lin Suo". But every time he sang "There is a storm outside the Spring and Autumn Pavilion, where the sad sounds break the silence", the spectator in the center of the audience would be stabbed to death from behind. And he always wakes up on time at 00:48. What's even weirder is that every time he wakes up, a two-meter-long Qinglong Yanyue Sword will appear out of thin air in his hand.