Boshan furnace was called "smoke furnace" during the Eastern Han Dynasty and was mostly used for aromatherapy. However, it is also said that the Boshan stove can be used as a soul bottle. Yue kiln started in the Eastern Han Dynasty, with famous teachers such as Xie Sheng and Yuan Yi. When the kiln master was in his prime, he supervised the official kiln and had a high status. There are also people who open their own private kilns and have considerable wealth. They are very intelligent and good at doing innovative things. It can be said that you enter the kiln to be a worker and leave the kiln to be a scholar, with skillful hands and pure ingenuity.
Although the soul bottle originated from Buddhism, it is mostly regarded as a symbol. In other words, the "soul" of the dead in the soul bottle is just the spirit and belief of the living.