The Princess of Cruelty Xiē Yīngluò has managed to make off with a pair of blades from the Sorcerous Sword Index, and now she plots to use them and her mastery over poison to seize the rest from Shāng Bù Huàn.
That was masterful assistance... 
I am deeply in your debt.
Das war wirklich eine große Hilfe.
Vous m’avez été d’un grand secours.
Vous avez toute ma reconnaissance.