Comments of chapter undefined of Reincarnation: I Have Always Been Rich

I'm just speculating, but I'm guessing Uncle Liu is called Uncle Liu by other people, maybe even by his family (I have no idea which uncle it is since there's a lot of words for uncle in Chinese), and he is asking her to call him Grandpa (probably Ye?), which is a title similar to bro, sis, uncle, or auntie where the two do not have to be related by blood