What's the scandal between Dacheng and Zhiying?

Zhiying likes Dacheng's brother very much, just like him (don't worry, Dacheng is 2 1 year old, South Korea is 22 years old, and talent 16 years old. Still a little sister. ) I really want to be friends with Dacheng. She and Shengli in bigbang are good friends, so she asked Shengli for Dacheng's mobile phone number and sent Dacheng a short message saying that she likes her brother very much. She hopes to be friends with Dacheng once and never come back. So Ji-young is very angry. Later, many people liked Dacheng in the program, but Dacheng chose another girl (Kohara Ai was also Kara, but she just wrote her cell phone number on a piece of paper). That girl is not as good-looking as Ji-young, and Ji-young is very angry. . .