C170 good strategy

Bai Xian was very smart, if not she would not have been able to become his advisor. This was something that Ding Xiaofeng was very sure of, but seeing Bai Xian's assured look, he started to recall seeing a young girl's face for the first time under the night light. Was Bai Xian his own little sister?

Seeing that Ding Xiaofeng was in a daze, Ding Hualin opened his mouth: "Little Sister Bai