How did he know he was family? Did he reveal it at some point to him?
ch 82 What Are We Facing?
Eastern · Let me laugh
Its the word they used instead of direction dynasty sects or something stated in earlier chapters
Xu Tianji lamented, "Things are different now. Those two Chao Sects are waiting for your teacher to appear."
Eastern · Let me laugh
If you consider he only got the title of sword saint after slaying the great demon king then it is his first technical one
Moreover, this was Fang Wang's first battle after inheriting the title of Sword Saint, he could not afford to lose!
I Became An Immortal On Mortal Realm
Eastern · Let Me Laugh