What do you mean, ten expensive graves and nine high ones?
The grave is another home after death, where the body is stored. The soul must be super-living, and the body cannot be destroyed. Therefore, the world is also very cautious about choosing graves for their deceased relatives. They should choose a high-lying place, so that both the dead and the living will have good feng shui.
Precautions:
For the deceased relatives, future generations must go to the grave regularly or take care of the grave. In Tomb-Sweeping Day, Mid-Autumn Festival and Cold Clothes Festival, people should burn things in graves, such as paper money and cold clothes.
In the process of going to the grave, you should keep your face solemn and serious. Don't laugh, don't whisper, and don't eat while talking on the phone. Careless behavior will desecrate your deceased relatives and bring you a lot of trouble.