After what Lusserina said Zhang Yi remembered that it was really only because of Lusserina's county that he found out what had happened to his masters if she had said nothing Zhang Yi would have thought it impossible and would have discovered nothing.
But Zhang Yi was very grateful to Lusserina for this, otherwise, he would spend the rest of his life thinking that his masters had abandoned him and could never take revenge on them, so he was very happy that Lusserina had done it for him.
"I know, and I'm so grateful that you told me how to do what I wanted to do at that time, now thanks to you I knew that my masters had not abandoned me and so I knew they had died and I could even avenge their death."
"I know you're grateful for that, but that doesn't change the fact that you discovered it made you suffer and it made me suffer a lot too if you hadn't discovered any of this you would still be cultivating and happy with us."