Question: What is the commonly held notion regarding the dual nature of the soul called?
Sentence: It was thought that each person had a two-part soul: the spirit-soul (hun 魂) which journeyed to the afterlife paradise of immortals (xian), and the body-soul (po 魄) which remained in its grave or tomb on earth and was only reunited with the spirit-soul through a ritual ceremony.
Answer in sentence: yes