There's a purse of the lips and a slight nod at his vow, as Shen Qingqiu carefully attaches the sword to his waist. He could potentially have ended it there, but...then that question pops up, and the expression on his face morphs from one of vague indifference to something with a more icily threatening aura.

"And why, exactly, would the parentage of the stranger you attempted to steal from be important to you in any way? Let alone the details of my cultivation."