Comments of chapter undefined of The Sickly Scion's Petite Wife Is Sweet And Cool

I am still confused who is the duke and old master. And there's also mentioned of the corpse of crown prince. Who is this Madam Li? Is she the wife of the duke or the crown prince?

thanks for the chapter

Such a sad news that will be heard by him. His father and grandfather passed away.

Uncle is too suspicious.

thanks for the chapter