What constellation is Jing Shannai _ What did Jing Shannai die of?

The relationship between A-level teachers and Jingshan for three years

Hello, what is the relationship between the teacher of Class A for 3 years and Jingshan? The relationship between Class A teachers and Jingshan for 3 years is a teacher-student relationship. Because Jing Shannai of Class A, Class 3, is also a national youth swimming champion and a star figure in the school, suddenly committed suicide, but all the students in the class disagreed. Until 10 days before graduation, Hiragi, an art teacher, suddenly called 29 students in her class as hostages, in order to find out the truth about Chennai's suicide a few months ago, give them a "last lecture" and finally find out the real murderer.