As Ji Lingfeng's only son, Ji Nan should call Nie Qingru 'Grandma'.
However, according to blood ties, Qiao Nian was the only one in the Ji family who was truly related to her. Only Qiao Nian had her blood flowing through her veins.
Hence, Ji Nan said 'your grandmother' and not 'our grandmother'.
Qiao Nian frowned, looking like she wasn't in a good mood. "I guess you can say we're not on good terms."
"You…" Ji Nan didn't expect her to admit it so readily. For a moment, he didn't know how to persuade her. After a while, he said, "You're related to her by blood. She's one of the few elders alive. You should communicate with her properly. With your relationship, there's no need to cause such a scene. I heard you even forced the younger brother she raised to death? Was that for… Auntie?"
At first, Ji Nan couldn't bring himself to say 'Auntie', but he felt it wasn't that difficult after saying it.