The knights were training. Tristan liked to see them as if they were fighting on the battlefield. They used real swords and didn't care about their wounded and bleeding bodies.
Tristan had a particular schedule on Saturday or Sunday to practice swordsmanship with his two knights. Their strength was equal, but his two knights were much more agile.
Tristan Madigan's memories were helpful to him, much like the cells in his body. They recalled every move of sword fighting, spear fighting, horse riding, and dancing, so Tristan didn't have to practice too hard, and no one would realize he wasn't Tristan Madigan.
Tristan looked up at the clear blue sky. The sun was hot on his skin. The summer wasn't too hot, and it rained occasionally. How strange.