Legend of Immortal Casting

This is a work that I have been thinking about for 5 years. It originated from being obsessed with a certain immortality animation work in 2020, so much so that I fantasized about what my own immortality world would be like day and night. The Legend of Immortality tells the story of the mortal male protagonist Zhou Geng who meets the sword spirit Xiao Jianjian. They are both novices in cultivating immortals. What kind of adventures will they encounter when they embark on the path of cultivating immortals together?