Xu Bo had become the Dao Protector for Zhao Ge shortly after Zhao Ge was born.
Zhao Ge was not only a direct disciple of a Grandmaster Creator but also his actual grandson.
Between Grandmaster Creators, there was fierce competition over the capabilities of their disciples, and taking one's direct bloodline as a disciple was largely frowned upon, as it could easily become the subject of criticism.
The Dusk Master feared the judgment of other Grandmaster Creators and had always concealed Zhao Ge's identity and had not publicly acknowledged Zhao Ge as his grandson.
However, Zhao Ge was well aware of his own identity, and the Dusk Master's doting and indulgence had led to Zhao Ge developing a particularly foul temper, which Xu Bo found quite helpless.
In Xu Bo's eyes, the Dusk Master was excellent in every aspect except for how he raised his grandson.