This incense burner is cylindrical, has lines engraved on the outer surface and has a lip, a flat base, and three feet. These incense burners (or lu) evolved from ancient vessels (or ding) made of bronze, which were originally made during the Shang and Zhou dynasties. They were typically used for rituals. Porcelain incense burners first appeared in the Eastern Wu period. Before the Song dynasty, incense burners were typically shaped like trays. Starting in the Song dynasty, it became popular to make them with three feet.