Sanchin
It means three battles. A battle between the body, mind and espírito. This helps to correct breathing kata, who, focus and strength, and an impact resistance through continuous training.
Tensho
Ten means running and Sho means open hand. This kata was developed by Miyagi Chojun Sensei's kata Rokkishu Chinese style white heron. Rokkishu means six hands and shows the different hand positions in this kata. Tensho combines move smoothly.
It is the combination of a strong tension with breathing and hand movements smooth and fluid.