After the incense is lit, it should not be directly inserted into the soil. You need to kowtow to put it in front of the grave.
Worship is also exquisite. Generally speaking, the correct order is to burn incense, pay homage to the head.
When offering sacrifices to ancestors, you need to hold the incense in your right hand and the incense in your left hand, hold the incense above your head, bend over to offer sacrifices, and then put the incense in incense ashes. After completing this set of movements, you need to kneel and kowtow to be a ceremony.