[Two male protagonists + cultivating immortals + group portraits + upgrade flow + double cleansing + system]
Gu Zhiyi went through the book.
I find that I have actually traveled through the book and become the Bai Yueguang who died young in a book, a Bai Yueguang who only lives in the memories of the protagonist and everyone - Gu Zhiyi.
And his junior brother turned out to be the protagonist of this book... In order to change the fate of living only in the memories of others, in order to survive, Gu Zhiyi had no choice but to bind to the Bai Yueguang B-cell system and start working for the system.
Cultivation level: Qi refining → Foundation building → Golden elixir → Nascent Soul → God transformation → Mahayana → Overcoming tribulation
Purpose: friendship, cultivating immortality, saving the world