The news said Jiwoo became good friend with the female actor, Miss Cheung Yin. Cheung Yin herself is a famous celebritiy in China and she agreed to take the drama 101 merely because the co-star is Choijiwoo.
During the shooting of the drama, they became good friends. They need translators during their conversatons but they talked about common topics -- make up. Cheung told Jiwoo that the Chinese do not like making their face too white. Cheung said Jiwoo is a humble person and would accept other's opinion.
The photo was taken while Jiwoo felt asleep. When Jiwoo saw this photo, she only smiled and had no comment.

Your question: 101 has been broadcasted in some provinces eg. Bejing but still not broadcasted in many provinces.