C677 What kind of relationship

Could it be that these two people were related in some way?

Looking at how Song Jifeng was looking at them from the front and back, it was clear that the relationship between him and Song Yuxin was not that simple. Suddenly, a terrifying thought sprouted in his mind. Could it be that Song Yuxin was Song Jifeng's lover?

With this thought, everything suddenly seemed to change