Learning by Teaching

I read from this kendo book that one's learning also comes from teaching others who are inferior than himself.

Today, during keiko sessions with Jerry and Alex, I taught them what I learned from SPC.
I told him that if the opponent crosses your comfort zone, attack. Don't wait until he comes all the way in. Make him know that he should not cross your boundary.

Amazingly, when I was doing keiko with Mr. Yang, I remembered what I taught earlier and I applied that. When Mr. Yang came in closer and closer, I attacked for his Men or Kote. His advance became much less frequent and more cautious.