C689 Harmony Yi Xin's Gratification

Yee Xin's expression was obviously a little happy. Could it be that there was something that she did not know?

Although Su Ningning was puzzled, she did not ask any further.

Instead, she quietly waited until after school before slowly packing her things and went to Yee Xin's office. At this moment, many teachers in the office were busy. Seeing Su Ningning walk in