There is a "Dragon God and God of Wealth in Five Places and Five Earths" under my altar, but why are there three incense burners?

To sum up, the three incense burners are Guanyin's incense burner, ancestor's incense burner and landlord's incense burner. These three incense burners are right. How to say it specifically is very particular. Guanyin is the best. Yes The ancestor next door must be lowered, otherwise the ancestor can't sit still. The landlord is under Guanyin. Incense burners are installed under the corresponding ones and cannot be put together.