C640 The competition between the supreme experts.

"I know everything, but I am already on my break today. We can talk about it tomorrow."

"Thank you!" Sun Feng thanked her.

Sun Yingyi bowed and saluted. The way she addressed Yu Yixian was a bit old-fashioned.

Yu Yixian seemed to dislike the way she addressed her, so she said to Sun Yingyi, "Don't call me auntie. It's too vulgar. Call me Yixian!"

After that