What do you mean by burning incense on the left, burning incense in the middle and burning incense on the right?
First of all, from the perspective of geomantic omen, incense may represent a symbol of good luck. In geomantic omen, the left is Yang, the right is Yin, and the middle is the position of "Zhengzhong". Therefore, the left middle level represents good luck and peace, while the right high level represents smooth prosperity. It should be noted, however, that this is just a statement of geomantic omen, and there is no scientific basis to prove its accuracy and reliability.
Secondly, from the perspective of Buddhism, the left, middle and right height of incense may be related to people's beliefs and religious habits. Buddhism pays attention to the worship ceremony of putting hands together and bowing down. Put your hands together on your chest, representing your heartfelt respect and sincerity, so as to show your reverence and respect for bodhisattva or Buddha. Therefore, the phenomenon that the left side is flat and the right side is high may be caused by people's habitual posture of putting their hands together.
In a word, burning incense on the left, burning incense in the middle, burning incense on the right and burning incense at a high level is a complex problem that needs comprehensive analysis and explanation in many aspects.