EM Sales Technicals? Help

Hello, I have an upcoming interview in EM Credit Sales for a BB in Paris. Second round - passed first round where they mostly asked me about the news and bonds, nothing super technical. But I feel like 2nd round will be a lot more technical and idk what to study to prepare? Have already interned in S&T in an American BB but honestly feel like everything I learned was super surface level... Studied econ, not finance in undergrad, currently in GE for Masters. What kind of math should I prepare for beyond basic bond pricing? What are the biggest drivers of EM markets? What else would they ask me?? Please help, interview is soon. Thanks!