The Book of Changes is the head of the group classics, and its profoundness is recognized by the world. Feng shui and numerology have a history of thousands of years. Spend some money and you can learn it in a few months. What is the head of the group classics and what is extensive and profound?
If someone says that you spend 1000 yuan, you don't have to go to primary school or middle school. You can take the postgraduate entrance examination soon. Would you believe it?
Think for yourself. It's all a lie.