"What do you know, sister?"

Xin Yunduo didn't want to hide it from Xin Yunzhen, but she was guessing. She wanted to find enough evidence to tell Xin Yunzhen that she found it first.

"she often comes home and secretly stirs up the relationship between your mother and you."

Xin Yunduo said, "last time my mother found you, she told me the secret."

"and before I went to Gu's competition project, she was waiting in Gu's lobby, waiting for Gu Yueze, and then telling him about me."

Xin Yunduo then analyzed, "if she wants to help me, there's no need to stir up the relationship between your mother and you....