Duke Zhou dreamed that her sister committed suicide.

People often say that dreams are the opposite, referring to strange dreams. If you often miss your sister, this is a normal dream.

If you don't care, this is a strange dream, then maybe 1 was killed, 2, she killed, 3 the other person committed suicide, 4 someone around her or you died, 5, she created a person, ... but suicide is impossible. There is no point in supplementing ordinary dreams.