How is Duan Jianye's fortune-telling level _ Duan Jianye's numerology treasure

Why does Duan Jianye say that traditional numerology is rubbish? Misleading a large number of Yijing scholars, the blind faction is the traditional mandarin of China? The local blind people think so too!

Many blind people can't read words, and they copy them mechanically by formulas, which has certain accuracy. After all, it is absolutely impossible to make a living from this. It is more accurate and prestigious than many normal charlatans. However, the blind know what it is, but they don't know why. They don't know much about the principles and reasoning process of Yi-ology and lack flexibility.