What do you mean, "I didn't say meridian?"

I remember that when I read novels of the Qing Dynasty or the Republic of China, I often have this line, which means that the other party didn't tell me the reason, but in fact, the other party couldn't convince himself. So in this case, we say that the other party can't tell me the meridian, which is the heavenly stems and earthly branches in numerology. At that time, people studied classics since childhood. These things were common sense to these literati, so they often wrote them in books and novels.