Qingshan Resentment

Three years ago, He Yu's sister went into the city's No. 2 Hospital to work the night shift and never came out again. There are only two words in the police file: missing. Three years later, He Yu stood in front of the same building - it had been renamed "Qingshan Mental Hospital" … "On the night of Zhongyuan, marry the groom..." A nursery rhyme broke the silence of the night, and a blue mark slowly emerged on He Yu's wrist...