Apparently, her little brother doesn't care if his older sister is one of the biggest names in Korean entertainment, because he's 更多 bent on ignoring her. 李知恩 uploaded screenshots of her conversation with her little brother onto her fancafe, and most of the chat is 李知恩 trying to get her brother's attention 由 texting "Hey" over and over again.
At one point, 李知恩 gives up with the string of "Hey"s and says instead, "If 你 keep ignoring me, I'm going to stop giving 你 all allowances." Only then he answered, "Why?".
After a few 'conversations', she finally concluded. "Oh, I guess 你 just don't read my texts anymore."
The conversation amused many fans, who commented, "In the end, they're just normal siblings..", "To him she's just the annoying older sister", and "She's looking out for you!"
source: allkpop