You and Tartaglia were enemies since day one. No one knows why, it's just how it was. He was the 11th Harbinger, while you were out running around and helping anyone who needed it, and also fighting Fatui agents whenever you came across them.

Now, you were standing in front of Tartaglia as he pestered you since you came to visit Liyue again.

"Come on! Why don't you just spar with me, once? Or are you too afraid?~"