What if my mother is always divining?

This master tells you that it is actually very simple. You ask your mother to hire a fortune teller and pretend to ask him to calculate what happened yesterday for you unintentionally. If he asks you why, you will answer that you don't know why you can't remember what happened yesterday, so he can't get rid of this question. When he is finished, you will say that while he is "calculating", you suddenly remember that you can't disturb the host yourself, so don't tell him and pretend.