It has always been the case that, as long as Aria says a word, no matter how difficult it is, Joshua will be at the forefront.
About using cunning ways, it wasn't just Aria who thought of it. Joshua also discovered the loophole in it. That's why he was so excited when talking to his assistant: "Quick! Bring me all of Thomas Yates' information!"
Joshua was somewhat anxious, saying a lot on his own, but the assistant didn't even know who Thomas Yates was. How was he supposed to conjure up the information out of thin air?
"Thomas Yates? Do you want the information now? I might have to look for it, then filter it out before giving it to you."
Joshua had discovered Thomas Yates in the web of relationships. Listening to the assistant's words was really difficult. It seemed that they needed to be retrained. Why had communicating with them become so difficult?
"Come, come here," Joshua beckoned, pointing at Thomas Yates' name.