Sneaking

"Don't worry. She is fine. She went to Phoenix's concert yesterday," Tang Ning Xu comforted as she looked at Rui Han and Qiao Xin Yi.

Tang Ning Xu wasn't lying when she said that Mo Xi went to Phoenix's concert because Mo Xi indeed snuck into the concert area with the help of Tang Ning Xu, Gu Ran Yi, Alexander, Lu Jin Sheng, and Jackson. Basically, everyone in Blue Diamond Entertainment who knew about her identity helped her to sneak into the place just so that she could watch Phoenix's performance.

Valerie followed Mo Xi because she wanted to watch Phoenix's performance as well. Hence, simply put, it was two ladies sneaking into the concert area to watch the performance with the help of Blue Diamond Entertainment's people.