Do you mean the novel version or the drama version?
In the theatrical version:
Tong Sheng was transformed into the daughter of Ju Dai. No one knew about it except Ju Dai, so they buried her. In addition, she came back not for her mother's funeral, but for her father's funeral, and then lied to everyone that her mother was ill, so she went to the cloister pavilion instead of her mother to attend a high-profile first seven.
In the novel: Tong Sheng went to find Ju Dai, only to find that she was dead. When she wanted to call the police, she found the invitation letter, so she planned to make up like Ju Dai, so she buried her.
LZ, is there anything unclear?
PS: How did Takako Tokiwa's face become like this? Alas ~ ~ ~ I knew she was starring, but I never recognized her. It took me a long time to become more and more like it.