[Master or not, no one is infallible. The same trick probably wouldn't work twice. She's not surprised he was able to do something like that - there is a reason why a fight is a fight. This was a spar, its purpose was to test their strengths and weaknesses - what good would it do either of them if she brought all her full strength to bare against him? All the same, he'd won that round, fair and square.

...why is he bowing?]

You don't have to bow.

[She didn't think he was mocking her, but... this was still weird. Let's shift the topic.]

I was trained in the North Pole by Master Pakku. He declared me a master before we left and gave me some scrolls to study so that I could continue to teach Aang.

[I've gotten better since then.

...or not. We can stay on this topic. Since it's apparently important to her and all.]