As the second young master of the Qi family, he didn't need to please anyone. He was always fawned over when he was a child and even as he grew up, he didn't have much need for emotional intelligence.
Furthermore, he was wholeheartedly devoted to scientific research, and everything else was dealt with by Qi Xiao. He didn't need to meet anyone, which had resulted in his headstrong personality.
As long as he believed something was right, he wouldn't compromise.
Even in any situation, if he had animosity towards someone, he would express his emotions without reservation, just like now.
He was originally reluctant to recognize Xia Yumo as his sister and held a grudge in his heart. However, he had come out of fear that his big brother would vent his anger on Miaomiao.
But after he came, whether he was willing to actively please this sister was beyond his big brother's control.