Road of Flowers
I guess maybe it's her maternal Grandpa...her mother & aunt has the surname Ning whereas her maternal Grandma's surname is Chen... it's said that Grandma Chen Shulan was a professor & secret researcher...& her Grandpa taught her programming since childhood that means his background wasn't that simple...& Ninghai town where they lived had a secret laboratory which exploded years ago...& her Grandpa died which was said to be taking unrecognized meds & was said to be a crazy by Ranran's mother & then Brother Gu & Cheng Juan found out that the reason for Grandma Chen's health deteriorating was due to Uranium radiation...now that I think about all this, I guess Grandma was aware of the fact that Ranran's dad was a direct descendant of the Qin family & maybe that's why she always said that he looked handsome & got her elder daughter married to him & didn't want them to be divorced..........