I stopped reading at the part where the mc met the girl from the immortal world where she got injured and had to go to earth. Its pretty early as far as i know
Do you mean his disciple? He finds out when he goes to the Everlasting Feast Hall or something, but he doesn't actually "meet" her until like 400-500 chapters in. I haven't read it since Qidian ripped it from the translator and left it to rot, so I don't know the exact spot.