Auspicious Time to Lay Coffin

My family has been using the "stopping coffin" to predict good and bad luck for generations. On the day I was born, the coffin chirped on its own, pointing to my fiancé. I come from a mysterious "coffin divination family". There is a black wooden coffin parked in the family ancestral hall all year round. Before major family decisions, blood relatives must lie in the coffin to sense the "divine secrets". During the haircut ceremony, I lay down in the coffin as usual to ask about my future marriage, but the coffin shook violently, and blood words seeped out of the coffin wall, pointing directly at my gentle and beloved fiancé - which would lead to "great disaster" for me.