The Name of Shaoxie

Why am I who I am? Where do I come from? Why am I not someone else? Why must I be me and not someone else? Can I be someone else? If possible, would it be possible to make one person's consciousness immortal by occupying another person's consciousness? In a sense, it would also be human immortality? What would the world be like if it could be achieved? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.