He's not unfamiliar with Ye Xingbei.
Even if he doesn't care about worldly matters, Ye Xingbei lived in his family for six years after all.
Ye Xingli deeply loves Ye Xingbei, just as a real brother would love a real sister.
At first, his two sons both kept Ye Xingbei's true identity a secret from her.
He once even thought that Ye Xingli had fallen in love with Ye Xingbei, and deliberately observed for a while, only to realize he was overthinking.
Ye Xingli has a charming and dashing appearance, like a playboy, but in reality, he hasn't even awakened to matters of romance.
His interest in eating, drinking, and having fun far exceeds his interest in women.
His affection for Ye Xingbei is purely that of a brother for his sister.
It was only much later that he learned Ye Xingbei was his eldest brother's daughter, and indeed his sons' sister...
Looking back, he really made far too many mistakes and missed far too much.
