Gu Lingyun's disciple Shen Xingyan broke off the master-disciple relationship with Gu Lingyun because he did not want to be punished and entered the Demon Sect and became the chief disciple of the Demon Sect Lord. Later, after the battle between immortals and demons, Shen Xingyan died and he realized how good Gu Lingyun was to him. Shen Xingyan was reborn.
Intention: to start over